cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characterising molecules for fundamental physics: an accurate spectroscopic model of methyltrioxorhenium derived from new infrared and millimetre-wave measurements
Creators: name: Asselin, Pierre
name: Berger, Yann
name: Huet, Thérèse R.
name: Margulès, Laurent
name: Motiyenko, Roman
name: Hendricks, Richard J.
name: Tarbutt, Michael R.
name: Tokunaga, Sean K.
name: Darquié, Benoît
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Precise spectroscopic analysis of polyatomic molecules enables many striking advances in physical chemistry and fundamental physics. We use several new high-resolution spectroscopic devices to improve our understanding of the rotational and rovibrational structure of methyltrioxorhenium (MTO), the achiral parent of a family of large oxorhenium compounds that are ideal candidate species for a planned measurement of parity violation in chiral molecules. Using millimetre-wave and infrared spectroscopy in a pulsed supersonic jet, a cryogenic buffer gas cell, and room temperature absorption cells, we probe the ground state and the Re=O antisymmetric and symmetric stretching excited states of both CH3 187 ReO3 and CH3 185 ReO3 isotopologues in the gas phase with unprecedented precision. By extending the rotational spectra to the 150-300 GHz range, we characterize the ground state rotational and hyperfine structure up to J = 43 and K = 41, resulting in refinements to the rotational, quartic and hyperfine parameters, and the determination of sextic parameters and a centrifugal distortion correction to the quadrupolar hyperfine constant. We obtain rovibrational data for temperatures between 6 and 300 K in the 970-1015 cm-1 range, at resolutions down to 8 MHz and accuracies of 30 MHz. We use these data to determine more precise excited-state rotational, Coriolis and quartic parameters, as well as the ground-state centrifugal distortion parameter D K of the 187 Re isotopologue. We also account for hyperfine structure in the rovibrational transitions and hence determine the upper state rhenium atom quadrupole coupling constant eQq' .
Cluster superconductivity in the magnetoelectric Pb(Fe1/2Sb1/2)O3 ceramics
Creators: name: Laguta, V. V.
name: Marysko, M.
name: Stephanovich, V. A.
name: Raevsky, I. P.
name: Olekhnovich, N. M.
name: Pushkarev, A. V.
name: Radyush, Yu. V.
name: Raevskaya, S. I.
name: Kuzian, R. O.
name: Chlan, V.
name: Štěpánková, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the observation of cluster (local) superconductivity in the magnetoelectric Pb(Fe1/2Sb1/2)O3 ceramics prepared at a hydrostatic pressure of 6 GPa and temperatures 1200-1800 K to stabilize the perovskite phase. The superconductivity is manifested by an abrupt drop of the magnetic susceptibility at the critical temperature TC 7 K. Both the magnitude of this drop and TC decrease with magnetic field increase. Similarly, the low-field paramagnetic absorption measured by EPR spectrometer drops significantly below TC as well. The observed effects and their critical magnetic field dependence are interpreted as manifestation of the superconductivity and Meissner effect in metallic Pb nanoclusters existing in the ceramics. Their volume fraction and average size were estimated as 0.1-0.2% and 140-150 nm, respectively. The superconductivity related effects disappear after oxidizing annealing of the ceramics.
description: 9 pages, 5 figures
Loxotropa formicarum Kieffer 1911
Creators: name: Notton, David G.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Diapriidae
Loxotropa
Loxotropa formicarum

description: Loxotropa formicarum Kieffer, 1911b: 944.
Valid name
Basalys formicarum (Kieffer, 1911).
Summary of types
Not seen.
Primary type data
According to Masner (1965): “ Loxotropa formicarum ♂; Darenth Wood, 24.ix.1909; BMNH typelabel”.
Type locality
England, London.
Remarks
This species was described from an unspecified number of males. Although one male type was listed for the BMNH by Masner (1965), no material was found; nor was this specimen noted by Nixon (1980).
description: Published as part of Notton, David G., 2014, A catalogue of the types of Diapriinae (Hymenoptera, Diapriidae) at the Natural History Museum, London, pp. 1-123 in European Journal of Taxonomy 75 on pages 69-70, DOI: 10.5852/ejt.2014.75, http://zenodo.org/record/3862773
Characterizing the dynamical semigroups that do not decrease a quantum entropy
Creators: name: Aniello, Paolo
name: Chruscinski, Dariusz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In finite dimensions, we provide characterizations of the quantum dynamical semigroups that do not decrease the von Neumann, the Tsallis and the Renyi entropies, as well as a family of functions of density operators strictly related to the Schatten norms. A few remarkable consequences --- in particular, a description of the associated infinitesimal generators --- are derived, and some significant examples are discussed. Extensions of these results to semigroups of trace-preserving positive (i.e., not necessarily completely positive) maps and to a more general class of quantum entropies are also considered.
description: 24 pages
Generating single-photon catalyzed coherent states with quantum-optical catalysis
Creators: name: Xu, Xue-xiang
name: Yuan, Hong-chun
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We generate single-photon catalyzed coherent states (SPCCSs) by means of quantum-optical catalysis based on the beam splitter (BS) or the parametric amplifier (PA). These states are obtained in one of the BS (or PA) output channels if a coherent state and a single-photon Fock state are present in two input ports and a single photon is registered in the other output port. The success probabilities of the detection (also the normalization factors) are discussed, which is different for BS and PA catalysis. In addition, we prove that the generated states catalyzed by BS and PA devices are actually the same quantum states after analyzing photon number distribution of the SPCCSs. The quantum properties of the SPCCSs, such as sub-Poissionian distribution, anti-bunching effect, quadrature squeezing effect, and the negativity of the Wigner function are investigated in detail. The results shows that the SPCCSs are non-Gaussian states with an abundance of nonclassicality, which can provide the quantum advantages for quantum technological tasks.
description: 8 pages, 8 figures, Comments are welcome!
Fourier transform spectroscopy of a spin-orbit coupled Bose gas
Creators: name: Valdés-Curiel, A.
name: Trypogeorgos, D.
name: Marshall, E. E.
name: Spielman, I. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We describe a Fourier transform spectroscopy technique for directly measuring band structures, and apply it to a spin-1 spin-orbit coupled Bose-Einstein condensate. In our technique, we suddenly change the Hamiltonian of the system by adding a spin-orbit coupling interaction and measure populations in different spin states during the subsequent unitary evolution. We then reconstruct the spin and momentum resolved spectrum from the peak frequencies of the Fourier transformed populations. In addition, by periodically modulating the Hamiltonian, we tune the spin-orbit coupling strength and use our spectroscopy technique to probe the resulting dispersion relation. The frequency resolution of our method is limited only by the coherent evolution timescale of the Hamiltonian and can otherwise be applied to any system, for example, to measure the band structure of atoms in optical lattice potentials.
The CMIP6 Data Request – with overview of IPCC process
Creators: name: Juckes, Martin N
Publisher: name: Zenodo
Year: 2018
Subjects: subject: data and information
subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85040468.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: The CMIP6 Data Request specifies the data requirements for the CMIP6 model inter-comparison project. The presentation includes a review of the CMIP5 archive and of the process of exploitation by the IPCC.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1367/ Event type: other. The publish date on this item was its original published date. This work was funded by: Copernicus Climate Change Service. This item was not refereed before the publication Associated projects: C3S_34A_Lot1 [CP4CDS] Main files in this record: CMIP6_DataRequest_March2018.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Martin Juckes. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Anagallis tenella Linnaeus 1774
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Ericales
Primulaceae
Anagallis
Anagallis tenella

description: Anagallis tenella (Linnaeus) Linnaeus, Systema Vegetabilium, ed. 13: 165. 1774. ["Habitat in Galliae, Angliae humidis."] Sp. Pl. 1: 148 (1753). RCN: 1184. Basionym: Lysimachia tenella L. (1753). Type not designated. Original material: as basionym. Current name:  Anagallis tenella (L.) L. (Primulaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 288, DOI: 10.5281/zenodo.291971
Anagyris foetida Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Fabales
Fabaceae
Anagyris
Anagyris foetida

description: Anagyris foetida Linnaeus, Species Plantarum 1: 374. 1753. "Habitat in Italiae, Siciliae, Hispaniae montibus." RCN: 2944. Lectotype (Jafri in Jafri & El-Gadi, Fl. Libya 86: 9. 1980): Herb. Linn. No. 523.1 (LINN). Generitype of Anagyris Linnaeus. Current name:  Anagyris foetida L. (Fabaceae: Faboideae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 288, DOI: 10.5281/zenodo.291971
Anastatica hierochuntica Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Brassicales
Brassicaceae
Anastatica
Anastatica hierochuntica

description: Anastatica hierochuntica Linnaeus, Species Plantarum 2: 641. 1753. "Habitat in littoribus maris rubri." RCN: 4665. Lectotype (Hedge in Jarvis & al., Regnum Veg. 127: 18. 1993): Herb. Clifford: 328, Anastatica 1 (BM-000646249). Generitype of Anastatica Linnaeus. Current name:  Anastatica hierochuntica L. (Brassicaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on pages 288-289, DOI: 10.5281/zenodo.291971
Quantum simulation of 2d topological physics using orbital-angular-momentum-carrying photons in a 1d array of cavities
Creators: name: Luo, Xi-Wang
name: Zhou, Xingxiang
name: Li, Chuan-Feng
name: Xu, Jin-Shi
name: Guo, Guang-Can
name: Zhou, Zheng-Wei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Orbital angular momentum (OAM) of light is a fundamental optical degree of freedom that has recently motivated much exciting research in diverse fields ranging from optical communication to quantum information. We show for the first time that it is also a unique and valuable resource for quantum simulation, by demonstrating theoretically how \emph{2d} topological physics can be simulated in a \emph{1d} array of optical cavities using OAM-carrying photons. Remarkably, this newly discovered application of OAM states not only reduces required physical resources but also increases feasible scale of simulation. By showing how important topics such as edge-state transport and topological phase transition can be studied in a small simulator with just a few cavities ready for immediate experimental exploration, we demonstrate the prospect of photonic OAM for quantum simulation which can have a significant impact on the research of topological physics.
description: 8 pages, 6 figures
Type-II InAs/GaAsSb/GaAs quantum dots as artificial quantum dot molecules
Creators: name: Klenovsky, P.
name: Krapek, V.
name: Humlicek, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied theoretically the type-II GaAsSb capped InAs quantum dots for two structures differing in the composition of the capping layer, being either (i) constant or (ii) with Sb accumulation above the apex of the dot. We have found that the hole states are segmented and resemble the states in the quantum dot molecules. The two-hole states form singlet and triplet with the splitting energy of 4μeV / 325μeV for the case (i) / (ii). We have also tested the possibility to tune the splitting by vertically applied magnetic field. As the predicted tunability range was limited, we propose an approach for its enhancement.
Further applications of the Container Method
Creators: name: Balogh, Jozsef
name: Wagner, Adam Zsolt
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Recently, Balogh--Morris--Samotij and Saxton--Thomason proved that hypergraphs satisfying some natural conditions have only few independent sets. Their main results already have several applications. However, the methods of proving these theorems are even more far reaching. The general idea is to describe some family of events, whose cardinality a priori could be large, only with a few certificates. Here, we show some applications of the methods, including counting $C_4$-free graphs, considering the size of a maximum $C_4$-free subgraph of a random graph and counting metric spaces with a given number of points. Additionally, we discuss some connections with the Szemerédi Regularity Lemma.
description: This is a survey style paper written for the IMA volume "Recent Trends in Combinatorics" for the 2014-2015 Annual Thematic Program Discrete Structures: Analysis and Applications at the Institute for Mathematics and its Applications during Fall 2014
High resolution Kerr microscopy study of exchange bias phenomena in FePt/Fe exchange spring magnets
Creators: name: Hussain, Zaineb
name: Kumar, Dileep
name: Reddy, V. Raghavendra
name: Gupta, Ajay
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Magnetization and magnetic microstructure of top soft magnetic layer (Fe), which is exchange spring coupled to bottom hard magnetic layer ($L1_0$ FePt) is studied using high resolution Kerr microscopy. When the sample (FePt/Fe) is at remanent condition of hard magnetic layer, considerable shifting of Fe layer hysteresis loop from centre i.e., exchange bias phenomena is observed. It is observed that one can tune the magnitude of exchange bias shift by reaching the remanent state from different saturating fields ($H_{SAT}$) and also by varying the angle between measuring field and $H_{SAT}$. The M-H loops and domain images of top soft Fe layer demonstrates unambiguously that soft magnetic layer at remanent state in such exchange coupled system is having unidirectional anisotropy. An analogy is drawn and the observations are explained in terms of the mostly accepted models of exchange bias phenomena exhibited by bilayers consisting of ferromagnetic(FM) and anti-ferromagnetic (AFM) layers, when the AFM layer is field cooled across $N\acute{e}el$ transition temperature.
description: 6 pages, 8 figures
Electrical 180o switching of Néel vector in spin-splitting antiferromagnet
Creators: name: Han, Lei
name: Fu, Xizhi
name: Peng, Rui
name: Cheng, Xingkai
name: Dai, Jiankun
name: Liu, Liangyang
name: Li, Yidian
name: Zhang, Yichi
name: Zhu, Wenxuan
name: Bai, Hua
name: Zhou, Yongjian
name: Liang, Shixuan
name: Chen, Chong
name: Wang, Qian
name: Chen, Xianzhe
name: Yang, Luyi
name: Zhang, Yang
name: Song, Cheng
name: Liu, Junwei
name: Pan, Feng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Antiferromagnetic spintronics have attracted wide attention due to its great potential in constructing ultra-dense and ultra-fast antiferromagnetic memory that suits modern high-performance information technology. The electrical 180o switching of Néel vector is a long-term goal for developing electrical-controllable antiferromagnetic memory with opposite Néel vectors as binary "0" and "1". However, the state-of-art antiferromagnetic switching mechanisms have long been limited for 90o or 120o switching of Néel vector, which unavoidably require multiple writing channels that contradicts ultra-dense integration. Here, we propose a deterministic switching mechanism based on spin-orbit torque with asymmetric energy barrier, and experimentally achieve electrical 180o switching of spin-splitting antiferromagnet Mn5Si3. Such a 180o switching is read out by the Néel vector-induced anomalous Hall effect. Based on our writing and readout methods, we fabricate an antiferromagnet device with electrical-controllable high and low resistance states that accomplishes robust write and read cycles. Besides fundamental advance, our work promotes practical spin-splitting antiferromagnetic devices based on spin-splitting antiferromagnet.
description: 19 pages, 4 figures
The elastic collision of two H-like atoms including the exotic Ps and Mu
Creators: name: Ray, Hasi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The elastic collision between two H-like atoms utilizing an ab-initio static-exchange model (SEM) in the center of mass (CM) frame considering the system as a four-body Coulomb problem where all the Coulomb interaction terms in the direct and exchange channels are treated exactly, is studied thoroughly. A coupled-channel methodology in momentum space is used to solve Lippman-Schwinger equation following the integral approach. The new SEM code [1-5] in which the Born-Oppenheimer (BO) scattering amplitude acts as input to derive the SEM amplitude using partial wave analysis, is utilized to study the s-, p-, d- wave elastic phase shifts and the corresponding partial cross sections. An augmented-Born approximation is used to include the contribution of higher partial waves more accurately to determine the total/integrated elastic cross sections. The effective range theory is used to determine the scattering lengths and effective ranges in the s-wave elastic scattering. The systems studied are Ps-Ps, Ps-Mu, Ps-H, Ps-D, Ps-T, Mu-Mu, Mu-H, Mu-D, Mu-T, H-H, H-D, H-T, D-D, D-T, T-T. The SEM includes the non-adiabatic short-range effects due to exchange. The MSEM code [1] is used to study the effect of the long-range van der Waals interaction due to induced dipole polarizabilities of the atoms in H(1s)-H(1s) elastic collision. The dependence of scattering length on the reduced mass of the system and the dependence of scattering length on the strength of long-range van der Waals interaction that varies with the minimum interatomic distance are observed [3].
description: 15 pages, 8 figures, 9 tables. arXiv admin note: text overlap with arXiv:1409.3371
Coupling of Higgs and Leggett modes in nonequilibrium superconductors
Creators: name: Krull, H.
name: Bittner, N.
name: Uhrig, G. S.
name: Manske, D.
name: Schnyder, A. P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Collective excitation modes are a characteristic feature of symmetry-broken phases of matter. For example, superconductors exhibit an amplitude Higgs mode and a phase mode, which are the radial and angular excitations in the Mexican-hat potential of the free energy. In two-band superconductors there exists in addition a Leggett phase mode, which corresponds to collective fluctuations of the interband phase difference. In equilibrium systems amplitude and phase modes are decoupled, since they are mutually orthogonal excitations. The direct detection of Higgs and Leggett modes by linear-response measurements is challenging, because they are often overdamped and do not couple directly to the electromagnetic field. In this work, using numerical exact simulations we show for the case of two-gap superconductors, that optical pump-probe experiments excite both Higgs and Leggett modes out of equilibrium. We find that this non-adiabatic excitation process introduces a strong interaction between the collective modes. Moreover, we predict that the coupled Higgs and Leggett modes are clearly visible in the pump-probe absorption spectra as oscillations at their respective frequencies.
description: 8 pages, 6 figures
The KMOS Redshift One Spectroscopic Survey (KROSS): Dynamical properties, gas and dark matter fractions of typical z~1 star-forming galaxies
Creators: name: Stott, John P.
name: Swinbank, A. M.
name: Johnson, Helen L.
name: Tiley, Alfie
name: Magdis, Georgios
name: Bower, Richard
name: Bunker, Andrew J.
name: Bureau, Martin
name: Harrison, Chris M.
name: Jarvis, Matt J.
name: Sharples, Ray
name: Smail, Ian
name: Sobral, David
name: Best, Philip
name: Cirasuolo, Michele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The KMOS Redshift One Spectroscopic Survey (KROSS) is an ESO guaranteed time survey of 795 typical star-forming galaxies in the redshift range z=0.8-1.0 with the KMOS instrument on the VLT. In this paper we present resolved kinematics and star formation rates for 584 z~1 galaxies. This constitutes the largest near-infrared Integral Field Unit survey of galaxies at z~1 to date. We demonstrate the success of our selection criteria with 90% of our targets found to be Halpha emitters, of which 81% are spatially resolved. The fraction of the resolved KROSS sample with dynamics dominated by ordered rotation is found to be 83$\pm$5%. However, when compared with local samples these are turbulent discs with high gas to baryonic mass fractions, ~35%, and the majority are consistent with being marginally unstable (Toomre Q~1). There is no strong correlation between galaxy averaged velocity dispersion and the total star formation rate, suggesting that feedback from star formation is not the origin of the elevated turbulence. We postulate that it is the ubiquity of high (likely molecular) gas fractions and the associated gravitational instabilities that drive the elevated star-formation rates in these typical z~1 galaxies, leading to the ten-fold enhanced star-formation rate density. Finally, by comparing the gas masses obtained from inverting the star-formation law with the dynamical and stellar masses, we infer an average dark matter to total mass fraction within 2.2$r_e$ (9.5kpc) of 65$\pm$12%, in agreement with the results from hydrodynamic simulations of galaxy formation.
description: Accepted for publication in MNRAS. This version has been updated to include additional references. The paper includes details of novel sky-subtraction techniques for KMOS, appropriate for high-z emission line galaxies
Fragilaria neotropica P. D. Almeida, E. Morales & C. E. Wetzel 2016, sp. nov.
Creators: name: Almeida, Pryscilla D.
name: Morales, Eduardo A.
name: Wetzel, Carlos E.
name: Ector, Luc
name: Bicudo, Denise C.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Chromista
Bacillariophyta
Bacillariophyceae
Fragilariales
Fragilariaceae
Fragilaria
Fragilaria neotropica

description: Fragilaria neotropica P.D.Almeida, E.Morales & C.E.Wetzel, sp. nov. (Figs 23–53)
Frustules narrowly rectangular in girdle view. Valves linear-lanceolate, conspicuously inflated at the center, gradually narrowing towards the poles, frequently broken towards ends (Figs 23–34).Apices capitated, sometimes deflected without obvious pattern (Figs 35–40). Central area broader, with ghost striae and delimited by adjacent shortened striae (Figs 47, 48, 50), sometimes deformed in a zig-zag fashion (Figs 31, 32, 39, 40, 50). Sternum linear, narrow, inconspicuous (Figs 28, 35, 39). Striae alternate, short and interrupted by spines, with indistinct areolae; difficult to observe in LM (Figs 25–27). Pyramidal spines throughout entire margin, including the poles, where 3–4 spines are present (Figs 41, 43, 44). Spines on valve face located at junction between valve face/mantle (Figs 41, 51–53). Striae composed of 1–3 areolae on valve face and 1–3 areolae on mantle (Figs 47, 52). Areolae rounded indistinct in LM (Figs 26, 27), covered with rotae (Figs 43, 47, 49, 50). Apical pore fields of the ocellulimbus type with 2–3 rows of poroids (Figs 43–46). Plaques present on abvalvar margin of mantle (Figs 52, 53). One small rimoportula present at one of the valve ends (Figs 41–43, 46). Cingulum composed of 2–3 copulae. Girdle bands open with two rows of unoccluded perforations (Figs 51–53). Colonies not observed. Plastids unknown. Length: 52.0–72.0 μm, width: 1.7–2.0 μm, stria density 28–32 in 10 μm.
 Type:— BRAZIL. São Paulo: Cotia, Pedro Beicht Reservoir, 23° 44’00.5” S, 46° 57’ 24.5” W, 921 m a.s.l., P. D. Almeida & D. C. Bicudo, 18 June 2010 (Table 1) (holotype SP!, population on slide SP 427579, illustrated here in LM as Figs 23–40 and SEM as Figs 41–53. Isotype: BR! slide 4432).
 Etymology:—The specific epithet refers to the Neotropic ecoregion where it was found.
 Ecology:—Found in surface sediments, as epiphytic on Nymphoides sp. and also as planktonic. Acidophilous, mesotraphentic, living in reservoirs with low nutrient concentrations and low pH (Table 3).
description: Published as part of Almeida, Pryscilla D., Morales, Eduardo A., Wetzel, Carlos E., Ector, Luc & Bicudo, Denise C., 2016, Two new diatoms in the genus Fragilaria Lyngbye (Fragilariophyceae) from tropical reservoirs in Brazil and comparison with type material of F. tenera, pp. 163-183 in Phytotaxa 246 (3) on page 171, DOI: 10.11646/phytotaxa.246.3.1, http://zenodo.org/record/13676859
Signatures of strong coupling on nanoparticles: Revealing absorption anticrossing by tuning the dielectric environment
Creators: name: Stete, Felix
name: Koopman, Wouter
name: Bargheer, Matias
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Strongly coupled plasmon-exciton systems offer promising applications in nanooptics. The classification of the coupling regime is currently debated both from experimental and theoretical perspectives. We present a method to unambiguously identify strong coupling in plasmon-exciton core-shell nanoparticles by measuring true absorption spectra of the system. We investigate the coupling of excitons in J-aggregates to the localized surface plasmon polaritons on gold nanospheres and nanorods by fine-tuning the plasmon resonance via layer-by-layer deposition of polyelectrolytes. While both structures show a characteristic anticrossing in extinction and scattering experiments, the careful assessment of the systems' light absorption reveals that strong coupling of the plasmon to the exciton is only present in the nanorod system. In a phenomenological model of two classical coupled oscillators, intermediate coupling strengths split up only the resonance frequency of the light-driven oscillator, while the other one still dissipates energy at its original frequency. Only in the strong-coupling limit, both oscillators split up the frequencies at which they dissipate energy, qualitatively explaining our experimental finding.
The INTEGRAL/IBIS AGN catalogue: an update
Creators: name: Malizia, A.
name: Landi, R.
name: Molina, M.
name: Bassani, L.
name: Bazzano, A.
name: Bird, A. J.
name: Ubertini, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: In the most recent IBIS survey based on observations performed during the first 1000 orbits of INTEGRAL, are listed 363 high energy emitters firmly associated with AGN, 107 of which are reported here for the first time. We have used X-ray data to image the IBIS 90% error circle of all the AGN in the sample of 107, in order to obtain the correct X-ray counterparts, locate them with arcsec accuracy and therefore pinpoint the correct optical counterparts. This procedure has led to the optical and spectral characterization of the entire sample. This new set consists of 34 broad line or type 1 AGN, 47 narrow line or type 2 AGN, 18 Blazars and 8 sources of unknown class. These 8 sources have been associated with AGN from their positional coincidence with 2MASX/Radio/X-ray sources. Seven high energy emitters have been included since they are considered to be good AGN candidates. Spectral analysis has been already performed on 55 objects and the results from the most recent and/or best statistical measurements have been collected. For the remaining 52 sources, we report the spectral analysis for the first time in this work. We have been able to obtain the full X-ray coverage of the sample making use of data from Swift/XRT, XMM-Newton and NuSTAR. In addition to the spectral characterization of the entire sample, this analysis has enabled us to identify peculiar sources and by comparing different datasets, highlight flux variability in the 2-10 keV and 20-40 keV bands.
description: 13 pages, accepted for publication on MNRAS
Bell's Universe: A Personal Recollection
Creators: name: Bertlmann, Reinhold A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: My collaboration and friendship with John Bell is recollected. I will explain his outstanding contributions in particle physics, in accelerator physics, and his joint work with Mary Bell. Mary's work in accelerator physics is also summarized. I recall our quantum debates, mention some personal reminiscences, and give my personal view on Bell's fundamental work on quantum theory, in particular, on the concept of contextuality and nonlocality of quantum physics. Finally, I describe the huge influence Bell had on my own work, in particular on entanglement and Bell inequalities in particle physics and their experimental verification, and on mathematical physics, where some geometric aspects of the quantum states are illustrated.
description: 44 pages, 23 figures, To be published in "Quantum [Un]Speakables II: Half a Century of Bell's Theorem", eds. R. A. Bertlmann and A. Zeilinger, Springer 2016. arXiv admin note: text overlap with arXiv:1411.5322
Asymptotic and bootstrap tests for the dimension of the non-Gaussian subspace
Creators: name: Nordhausen, Klaus
name: Oja, Hannu
name: Tyler, David E.
name: Virta, Joni
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: Dimension reduction is often a preliminary step in the analysis of large data sets. The so-called non-Gaussian component analysis searches for a projection onto the non-Gaussian part of the data, and it is then important to know the correct dimension of the non-Gaussian signal subspace. In this paper we develop asymptotic as well as bootstrap tests for the dimension based on the popular fourth order blind identification (FOBI) method.
Elliptically Oscillating Classical Solution in Higgs Potential and the Effects on Vacuum Transitions
Creators: name: Kitadono, Yoshio
name: Inagaki, Tomohiro
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate oscillating solutions of the equation of motion for the Higgs potential. The solutions are described by Jacobian elliptic functions. Classifying the classical solutions, we evaluate a possible parameter-space for the initial conditions. In order to construct the field theory around the oscillating solutions quantum fluctuations are introduced. This alternative perturbation method is useful to describe the non-trivial quantum theory around the oscillating state. This perturbation theory reduces to the standard one if we take the solution at the vacuum expectation value. It is shown that the transition probability between the vacuum and multi-quanta states is finite as long as the initial field configuration does not start from the true vacuum.
description: 22 pages, 10 figures
Magnetization curves of geometrically frustrated exchange-biased FM/AFM bilayers
Creators: name: Pankratova, M.
name: Žukovič, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider a ferromagnetic/antiferromagnetic bilayer on a triangular lattice in the framework of the planar Heisenberg model. The impact of the geometrical frustration in this system on the magnetization curves and the exchange bias phenomenon is studied. The magnetization curves and the phase diagram for such systems are obtained. We observe horizontal plateaus and a split of the hysteresis loop on the magnetization curves. It is shown that the shift of the hysteresis loop (exchange bias) occurs for the systems with a magnetically hard antiferromagnet.
description: 3 pages, 4 figures, CSMAG'16 conference
Problem Solving and Learning
Creators: name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: One finding of cognitive research is that people do not automatically acquire usable knowledge by spending lots of time on task. Because students' knowledge hierarchy is more fragmented, "knowledge chunks" are smaller than those of experts. The limited capacity of short term memory makes the cognitive load high during problem solving tasks, leaving few cognitive resources available for metacognition. The abstract nature of the laws of physics and the chain of reasoning required to draw meaningful inferences makes these issues critical. In order to help students, it is crucial to consider the difficulty of a problem from the perspective of students. We are developing and evaluating interactive problem-solving tutorials to help students in the introductory physics courses learn effective problem-solving strategies while solidifying physics concepts. The self-paced tutorials can provide guidance and support for a variety of problem solving techniques, and opportunity for knowledge and skill acquisition.
description: 4 pages, PACS: 01.40.Fk,01.40.G-,01.40.gb
Euclidium syriacum W. T. Aiton
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Brassicales
Brassicaceae
Euclidium
Euclidium syriacum

description: Anastatica syriaca Linnaeus, Species Plantarum, ed. 2, 2: 895. 1763. "Habitat in Syriae tectis, ruderibus." RCN: 4666. Lectotype (Hedge in Cafferty & Jarvis in Taxon 51: 531. 2002): Mygind s.n., Herb. Linn. No. 821.3 (LINN). Current name:  Euclidium syriacum (L.) W.T. Aiton (Brassicaceae). Note: Jafri (1973: 103) indicated both 821.2 and 821.3 (LINN) as “type” and, as they are evidently not part of a single gathering, Art. 9.15 does not apply.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 289, DOI: 10.5281/zenodo.291971
Enhanced magnetocaloric effect due to selective dilution in a triangular Ising antiferromagnet
Creators: name: Borovský, Michal
name: Žukovič, Milan
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We employ an effective-field theory with correlations in order to study a magnetocaloric effect on a triangular Ising antiferromagnet, which is selectively diluted by non-magnetic impurities on one of the three sublattices. Such a dilution generally relieves massive degeneracy in our system and therefore the ground-state entropy diminishes and the magnetocaloric effect weakens at low temperatures. However, at relatively higher temperatures we can observe significantly enhanced negative isothermal entropy changes for the sublattice concentration $p_{\mathrm{A}} = 0.8$.
description: 3 pages, 5 figures, CSMAG'16 conference
Fragilaria spectra P. D. Almeida, E. Morales & C. E. Wetzel 2016, sp. nov.
Creators: name: Almeida, Pryscilla D.
name: Morales, Eduardo A.
name: Wetzel, Carlos E.
name: Ector, Luc
name: Bicudo, Denise C.
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Chromista
Bacillariophyta
Bacillariophyceae
Fragilariales
Fragilariaceae
Fragilaria
Fragilaria spectra

description: Fragilaria spectra P.D.Almeida, E.Morales & C.E.Wetzel, sp. nov. (Figs 54–84)
Frustules narrowly rectangular in girdle view (Fig. 55). Valves linear-lanceolate gradually narrowing towards the poles (Figs 54–71). Apices acute-rounded, with variation in width within the same population (Figs 62–71). Central area broader, limited by short adjacent striae (Figs 66–71), visible only with phase contrast (Fig. 58), without evident ghost striae (Figs 72–75). Sternum lanceolate and narrow (Figs 63, 72, 73). Striae very difficult to observe, with indistinct areolae (Figs 56–61), alternate at the centre of valve, becoming opposite toward the ends (Figs 72, 74). Spines absent (Figs 72, 74). Striae composed of up to 5 areolae located on valve face (Figs 72, 74). Areolae rounded and small (Figs 76–84). Volae not observed.Apical pore fields of the ocellulimbus type with 2–3 rows of poroids (Figs 76, 81–84). Two rimoportulae present per valve (Figs 73–75), but indistinct in LM. Girdle bands open, not shown here. Colonies not observed. Plastids numerous and elongate (Figs 54, 55). Length: 40.5–73.0 μm, width: 1.5–2.5 μm, striae density 24–25 in 10 μm.
 Type:— BRAZIL. São Paulo: Salesópolis, Paraitinga Reservoir, 23°31’22.0” S 45°54’17.8” W, 760 m a.s.l., A. C. R. Rocha & D. C. Bicudo, 14 January 2010 (Table 1) (holotype SP!, population on slide SP 427984, partially illustrated here in LM as Figs 54–71 and SEM as Figs 72–84. Isotype: BR! slide 4433).
 Etymology:— The specific epithet of the species refers to delicate appearance of the valves of this taxon, in the Epicurean philosophy, spectra is an emanation from physical objects giving rise to visual and mental images.
 Ecology:—Found as epiphytic on Salvinia sp. and as part of the plankton.Acidophilous, oligo- to mesotraphentic, living in reservoirs as single cells, with low pH and TP (Table 3).
description: Published as part of Almeida, Pryscilla D., Morales, Eduardo A., Wetzel, Carlos E., Ector, Luc & Bicudo, Denise C., 2016, Two new diatoms in the genus Fragilaria Lyngbye (Fragilariophyceae) from tropical reservoirs in Brazil and comparison with type material of F. tenera, pp. 163-183 in Phytotaxa 246 (3) on pages 174-176, DOI: 10.11646/phytotaxa.246.3.1, http://zenodo.org/record/13676859
ATSR Arctic Surface Temperature (AAST) Dataset V2.1 Product User Guide
Creators: name: Dodd, E.M.A.
Publisher: name: Zenodo
Year: 2018
Subjects: subject: https://id.loc.gov/authorities/subjects/sh85040468.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: The purpose of this document is to be a Product User Guide (PUG) for Along-Track Scanning Radiometer (ATSR) Arctic combined Surface Temperature (AAST) data products produced by the University of Leicester. This PUG has been developed to facilitate users in their exploitation of these products. It provides the technical specifications for this dataset, including the structure of the products, file naming conventions, metadata definitions and quality control information. A summary of how the data were produced and an overview of each satellite instrument used are also included for interested users. This work was funded by The UK Dept. for Business, Energy & Industrial Strategy.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1378/ The publish date on this item was its original completed date. Main files in this record: AAST_V2.1_PUG.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr Alison Waterfall. Transferred to CEDA document repository community on Zenodo on 2022-11-24
A Monte Carlo study of critical properties of strongly diluted magnetic semiconductor (Ga,Mn)As
Creators: name: Tomczak, P.
name: Diep, H. T.
name: Jabłoński, P.
name: Puszkarski, H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Within a Monte Carlo technique we examine critical properties of diluted bulk magnetic semiconductor (Ga,Mn)As modeled by a strongly diluted ferromagnetic Heisenberg spin-$\frac{5}{2}$ system on a face centered cubic lattice. We assumed that 5\% of Ga atoms is substituted by Mn atoms and the interaction between them is of the RKKY-type. The considered system is randomly quenched and a double average was performed: firstly, over the Boltzmann probability distribution and secondly - over 2048 configurations related to the quenched disorder. We estimated the critical temperature: $T_c=97\pm6$ K, which is in agreement with the experiment. The calculated high value of critical exponent $ν$ seems to point to a possibility of non-universal critical behavior.
description: 4 pages, 6 figures
Learning Correspondence Structures for Person Re-identification
Creators: name: Lin, Weiyao
name: Shen, Yang
name: Yan, Junchi
name: Xu, Mingliang
name: Wu, Jianxin
name: Wang, Jingdong
name: Lu, Ke
Publisher: name: arXiv
Year: 2017
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: This paper addresses the problem of handling spatial misalignments due to camera-view changes or human-pose variations in person re-identification. We first introduce a boosting-based approach to learn a correspondence structure which indicates the patch-wise matching probabilities between images from a target camera pair. The learned correspondence structure can not only capture the spatial correspondence pattern between cameras but also handle the viewpoint or human-pose variation in individual images. We further introduce a global constraint-based matching process. It integrates a global matching constraint over the learned correspondence structure to exclude cross-view misalignments during the image patch matching process, hence achieving a more reliable matching score between images. Finally, we also extend our approach by introducing a multi-structure scheme, which learns a set of local correspondence structures to capture the spatial correspondence sub-patterns between a camera pair, so as to handle the spatial misalignments between individual images in a more precise way. Experimental results on various datasets demonstrate the effectiveness of our approach.
description: IEEE Trans. Image Processing, vol. 26, no. 5, pp. 2438-2453, 2017. The project page for this paper is available at http://min.sjtu.edu.cn/lwydemo/personReID.htm arXiv admin note: text overlap with arXiv:1504.06243
Experimental measurement of plasmonic nanostructures embedded in silicon waveguide gaps
Creators: name: Espinosa-Soria, Alba
name: Griol, Amadeu
name: Martínez, Alejandro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this work, we report numerical simulations and experiments of the optical response of a gold nanostrip embedded in a silicon strip waveguide gap at telecom wavelengths. We show that the spectral features observed in transmission and reflection when the metallic nanostructure is inserted in the gap are extremely different to those observed in free-space excitation. First, we find that interference between the guided field and the electric dipolar resonance of the metallic nanostructure results in high-contrast (> 10) spectral features showing an asymmetric Fano spectral profile. Secondly, we reveal a crossing in the transmission and reflection responses close to the nanostructure resonance wavelength as a key feature of our system. This approach, which can be realized using standard semiconductor nanofabrication tools, could lead to fully exploit the extreme properties of subwavelength metallic nanostructures in an on-chip configuration, with special relevance in fields such as biosensing or optical switching.
description: 10 pages, 7 figures
Vaisala Wind Profiler LAP-3000
Creators: name: Unknown
Publisher: name: Zenodo
Year: 2018
Subjects: subject: https://id.loc.gov/authorities/subjects/sh2018002590.html
subject: https://id.loc.gov/authorities/subjects/sh85084334.html

description: Manufacturer's brochure for the Vaisala Wind Profiler LAP-3000 including the instrument specifications. Data collected by these instruments can be found in the CEDA archive.
description: Previously curated at: http://cedadocs.ceda.ac.uk/1379/ This item was not refereed before the publication Main files in this record: Vaisala-lap-3000_brochure.pdf Item originally deposited with Centre for Environmental Data Analysis (CEDA) document repository by Dr W Garland. Transferred to CEDA document repository community on Zenodo on 2022-11-24
Anchusa officinalis Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Boraginales
Boraginaceae
Anchusa
Anchusa officinalis

description: Anchusa angustifolia Linnaeus, Species Plantarum 1: 133. 1753. "Habitat in Italia, Germania." RCN: 1076. Lectotype (Selvi in Cafferty & Jarvis in Taxon 53: 800. 2004): Herb. Linn. No. 182.2 (LINN). Current name:  Anchusa officinalis L. (Boraginaceae).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part A), pp. 252-342 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 289, DOI: 10.5281/zenodo.291971
Boltzmann entropy of a Newtonian Universe
Creators: name: Cabrera, D.
name: de Cordoba, P. Fernandez
name: Isidro, J. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A dynamical estimate is given for the Boltzmann entropy of the Universe, under the simplifying assumptions provided by Newtonian cosmology. We first model the cosmological fluid as the probability fluid of a quantum-mechanical system. Next, following current ideas about the emergence of spacetime, we regard gravitational equipotentials as isoentropic surfaces. Therefore gravitational entropy is proportional to the vacuum expectation value of the gravitational potential in a certain quantum state describing the matter contents of the Universe. The entropy of the matter sector can also be computed. While providing values of the entropy that turn out to be somewhat higher than existing estimates, our results are in perfect compliance with the upper bound set by the holographic principle.
description: 15 pages