cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum causal models, faithfulness and retrocausality
Creators: name: Evans, Peter W.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Wood and Spekkens (2015) argue that any causal model explaining the EPRB correlations and satisfying no-signalling must also violate the assumption that the model faithfully reproduces the statistical dependences and independences---a so-called "fine-tuning" of the causal parameters; this includes, in particular, retrocausal explanations of the EPRB correlations. I consider this analysis with a view to enumerating the possible responses an advocate of retrocausal explanations might propose. I focus on the response of Näger (2015), who argues that the central ideas of causal explanations can be saved if one accepts the possibility of a stable fine-tuning of the causal parameters. I argue that, in light of this view, a violation of faithfulness does not necessarily rule out retrocausal explanations of the EPRB correlations, although it certainly constrains such explanations. I conclude by considering some possible consequences of this type of response for retrocausal explanations.
Balloon-borne hard X-ray polarimetry with PoGOLite
Creators: name: Pearce, Mark
name: Florén, Hans-Gustav
name: Jackson, Miranda
name: Kamae, Tune
name: Kiss, Mózsi
name: Kole, Merlin
name: Moretti, Elena
name: Olofsson, Göran
name: Rydström, Stefan
name: Strömberg, Jan-Erik
name: Takahashi, Hiromitsu
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: PoGOLite is a hard X-ray polarimeter operating in the 25-100 keV energy band. The instrument design is optimised for the observation of compact astrophysical sources. Observations are conducted from a stabilised stratospheric balloon platform at an altitude of approximately 40 km. The primary targets for first balloon flights of a reduced effective area instrument are the Crab and Cygnus-X1. The polarisation of incoming photons is determined using coincident Compton scattering and photo-absorption events reconstructed in an array of plastic scintillator detector cells surrounded by a bismuth germanate oxide (BGO) side anticoincidence shield and a polyethylene neutron shield. A custom attitude control system keeps the polarimeter field-of-view aligned to targets of interest, compensating for sidereal motion and perturbations such as torsional forces in the balloon rigging. An overview of the PoGOLite project is presented and the outcome of the ill-fated maiden balloon flight is discussed.
description: Presented at 2012 IEEE Nuclear Science Symposium, Anaheim, USA. October 29 - November 3, 2012
Y(4260) as a mixed charmonium-tetraquark state
Creators: name: Dias, J. M.
name: Albuquerque, R. M.
name: Nielsen, M.
name: Zanetti, C. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using the QCD sum rule approach we study the Y(4260) state assuming that it can be described by a mixed charmonium-tetraquark current with $J^{PC}=1^{--}$ quantum numbers. For the mixing angle around $θ\approx (53.0\pm 0.5)^{0}$, we obtain a value for the mass which is in good agreement with the experimental mass of the Y(4260). However, for the decay width we find the value $\Ga_Y \approx (1.0\pm 0.2)$ MeV which is not compatible with the experimental value $\Ga \approx (88\pm 23)$ MeV. Therefore, we conclude that, although we can explain the mass of the Y(4260), this state cannot be described as a mixed charmonium-tetraquark state since, with this assumption, we can not explain its decay width.
description: 9 pages, 6 figures
Arae Flaviae IV: Margot Klee, Die Thermen auf dem Nikolausfeld; Mostefa Kokabi, Viehhaltung und Jagd im römischen Rottweil; Elisabeth Nuber, Die antiken Münzen aus Rottweil
Creators: name: Haalebos, Jan Kees
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Arae Flaviae IV: Margot Klee, Die Thermen auf dem Nikolausfeld; Mostefa Kokabi, Viehhaltung und Jagd im römischen Rottweil; Elisabeth Nuber, Die antiken Münzen aus Rottweil. Konrad Theiss Verlag, Stuttgart 1988, 380 Seiten, 130 Abbildungen und 22 Tafeln.
description: Bonner Jahrbücher, Bd. 191.1991(1992): Bonner Jahrbücher
Rheinisches Amt für Bodendenkmalpflege. Ausgrabungen, Funde und Befunde 1995
Creators: name: Beyer, Brigitte
name: Gerlach, Gudrun
name: Jürgens, Antonius
name: Krüger, Thomas
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Bonner Jahrbücher, Bd. 197.1997(1999): Bonner Jahrbücher
НИКОҲДАН АЖРАЛИШДА ОИЛАВИЙ МЕДИАЦИЯНИ ҚЎЛЛАШ ИСТИҚБОЛЛАРИ
Creators: name: Шарахметова, У.Ш
Publisher: name: Zenodo
Year: 2023

description: Оилани мустаҳкамлаш замонавий жамиятимиз учун долзарб масала бўлиб ҳисобланади. Шунинг учун ушбу мақсаддан келиб чиқиб, мавжуд оилаларни мустаҳкамлаш, ажралишлар сонини камайтириш учун ҳуқуқий шарт шароитлар яратиш керак. Ушбу муаммони ҳал қилишнинг асосий усулларидан бири- никоҳдан ажралишни ҳуқуқий тартибга солишга қаратилган қонунчиликни такомиллаштириш, никоҳдан ажралиш шаклини танлаш, шунингдек, эр-хотин ўртасида мавжуд бўлган ҳуқуқий низоларни ва ҳуқуқий тартибга солиш доирасидан ташқарида бўлган низоларни бартараф этишга қаратилган қўшимча тартибларни жорий этишдир.
ГЕНДЕР ТЕНГЛИГИ МАСАЛАСИГА ХОРИЖИЙ ВА МИЛЛИЙ ЁНДОШУВ
Creators: name: Кулдашев, Нуриддин
Publisher: name: Zenodo
Year: 2023

description: Бирлашган Миллатлар Ташкилоти (БМТ) ва бир қатор кўп миллатли давлатлар томонидан турли сиёсий йўллар билан қўллаб-қувватлашга ҳаракат қилинаётган гендер тенглиги масаласи кейинги вақтларда халқаро ҳамжамият томонидан тез-тез муҳокама қилинмоқда."Гендер" тушунчаси халқаро сиёсий аренада XX асрнинг охирларида пайдо бўлди. Аниқроғи, 1995 йил 4-15 сентябрь кунлари Пекин шаҳрида бўлиб ўтган Тўртинчи Бутунжаҳон Аёллар Конференциясида "Гендер тенгсизлиги" ижтимоий муаммо сифатида кўтарилди. Сайёрамизнинг 120 дан ортиқ мамлакатлари иштирокидаги мазкур конференцияда Пекин декларацияси ва Ҳаракатлар платформаси[1] қабул қилинди.
Peponocephala Nishiwaki and Norris 1966
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Peponocephala

description: Peponocephala Nishiwaki and Norris, 1966. Sci. Rep. Whales Res. Inst. (Tokyo), 20:95 -99. COMMENT: Formerly included in Lagenorhynchus; see Rice, 1977. JGM and RLB consider Peponocephala a subgenus of Lagenorhynchus but DWR, MN, TK, and WFP do not. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002005000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 294, DOI: 10.5281/zenodo.7352983
description: {"references": ["Rice, D. W. 1977. A list of the marine mammals of the world. Third ed. NOAA Technical Report, NMFS SSRF- 711: 1 - 15."]}
Quantum cube: A toy model of a qubit
Creators: name: Blasiak, Pawel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Account of a system may depend on available methods of gaining information. We discuss a simple discrete system whose description is affected by a specific model of measurement and transformations. It is shown that the limited means of investigating the system make the epistemic account of the model indistinguishable from a constrained version of a qubit corresponding to the convex hull of eigenstates of Pauli operators, Clifford transformations and Pauli observables.
description: 5 pages, 4 figures; Final version as published in Physics Letters A
Phase transition of the six-state clock model observed from the entanglement entropy
Creators: name: Krčmár, Roman
name: Gendiar, Andrej
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Berezinskii-Kosterlitz-Thouless (BKT) transitions of the six-state clock model on the square lattice are investigated by means of the corner-transfer matrix renormalization group method. The classical analogue of the entanglement entropy $S( L, T )$ is calculated for $L$ by $L$ square system up to $L = 129$, as a function of temperature $T$. The entropy has a peak at $T = T^{*}_{~}( L )$, where the temperature depends on both $L$ and boundary conditions. Applying the finite-size scaling to $T^{*}_{~}( L )$ and assuming the presence of BKT transitions, the transition temperature is estimated to be $T_1^{~} = 0.70$ and $T_2^{~} = 0.88$. The obtained results agree with previous analyses. It should be noted that no thermodynamic function is used in this study.
description: 5 pages, 6 figs
Geometric Measure of Pairwise Quantum Discord for Superpositions of Multipartite Generalized Coherent States
Creators: name: Daoud, M.
name: Laamara, R. Ahl
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give the explicit expressions of the pairwise quantum correlations present in superpositions of multipartite coherent states. A special attention is devoted to the evaluation of the geometric quantum discord. The dynamics of quantum correlations under a dephasing channel is analyzed. A comparison of geometric measure of quantum discord with that of concurrence shows that quantum discord in multipartite coherent states is more resilient to dissipative environments than is quantum entanglement. To illustrate our results, we consider some special superpositions of Weyl-Heisenberg, SU(2) and SU(1,1) coherent states which interpolate between Werner and Greenberger-Horne-Zeilinger states.
The static hard-loop gluon propagator to all orders in anisotropy
Creators: name: Nopoush, Mohammad
name: Guo, Yun
name: Strickland, Michael
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the (semi-)static hard-loop self-energy and propagator using the Keldysh formalism in a momentum-space anisotropic quark-gluon plasma. The static retarded, advanced, and Feynman (symmetric) self-energies and propagators are calculated to all orders in the momentum-space anisotropy parameter $ξ$. For the retarded and advanced self-energies/propagators, we present a concise derivation and comparison with previously-obtained results and extend the calculation of the self-energies to next-to-leading order in the gluon energy, $ω$. For the Feynman self-energy/propagator, we present new results which are accurate to all orders in $ξ$. We compare our exact results with prior expressions for the Feynman self-energy/propagator which were obtained using Taylor-expansions around an isotropic state. We show that, unlike the Taylor-expanded results, the all-orders expression for the Feynman propagator is free from infrared singularities. Finally, we discuss the application of our results to the calculation of the imaginary-part of the heavy-quark potential in an anisotropic quark-gluon plasma.
description: 22 pages
Magnetic phase separation and strong AFM nature of hexagonal Gd$_5$Sb$_3$
Creators: name: Samatham, S. Shanmukharao
name: Patel, Akhilesh Kumar
name: Suresh, K. G.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the combined results of structural, magnetic, transport and calorimetric properties of Mn$_5$Si$_3$-type hexagonal Gd$_5$Sb$_3$. With decreasing temperature, it exhibits a ferromagnetic-like transition at 265 K, Néel transition at 95.5 K and a spin-orientation transition at 62 K. The system is found to be in AFM state down to 2 K in a field of 70 kOe. Magnetic phase coexistence is not noticeable despite large positive Curie-Weiss temperature. Instead low-temperature AFM and high-temperature FM-like phases are separated in large temperature. Temperature-magnetic field ($H$-$T$) phase diagram reveals field-driven complex magnetic phases. Within the AFM phase, the system is observed to undergo field-driven spin-orientation transitions. Field-induced tricritical and quantum critical points appear to be absent due to strong AFM nature and by the intervention of FM-like state between PM and AFM states. Electrical resistivity along with large Sommerfeld parameter suggests metallic nature.
description: Gd5Sb3
Evidence for a topological "exciton Fermi sea" in bilayer graphene
Creators: name: Zaletel, Michael P.
name: Geraedts, Scott
name: Papić, Zlatko
name: Rezayi, Edward H.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The quantum Hall physics of bilayer graphene is extremely rich due to the interplay between a layer degree of freedom and delicate fractional states. Recent experiments show that when an electric field perpendicular to the bilayer causes Landau levels of opposing layers to cross in energy, a even-denominator Hall plateau can coexist with a finite density of inter-layer excitons. We present theoretical and numerical evidence that this observation is due to a new phase of matter -- a Fermi sea of topological excitons.
description: 14 pages, 13 figures; related to arXiv:1611.01171. v2: fixed typo in Eq 3 and IQHE exciton dispersion relation
ФАРЗАНД КЎРИШ ХАҚИДА ЭР ХОТИННИНГ БИРГАЛИКДА ҚАРОРЛАР ҚАБУЛ ҚИЛИШ ҲУҚУҚИЙ МЕХАНИЗМИНИ ШАКЛЛАНТИРИШ МАСАЛАЛАРИ ВА УШБУ ҲУҚУҚ ТАБИАТИ ТЎҒРИСИДА
Creators: name: Окюлов, О.
Publisher: name: Zenodo
Year: 2023

description: Оила жамиятнинг энг асосий бошланғич хужайраси бўлиб хисобланади. Оиланинг асосий функциялари нафақат никох ёки қон қариндошлик асосида кишиларни бир бирларига нисбатан ғамхўрлик асосида ўзаро хамжихат бўлиб оилавий турмуш кечиришини таъминлаш, аждодлар авлодлар ўртасидаги ворисликни амалга ошириш, балки кишилик жамиятида наслни давом эттириш хисобланади. Мамлакатимизда никохдан ажрашишларни суд узрли хисоблайдиган асосий сабабларидан бири ҳам фарзандсизликдир.
Warped Tori with Almost Non-Negative Scalar Curvature
Creators: name: Allen, Brian
name: Hernandez-Vazquez, Lisandra
name: Parise, Davide
name: Payne, Alec
name: Wang, Shengwen
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: For sequences of warped product metrics on a $3$-torus satisfying the scalar curvature bound $R_j \geq -\frac{1}{j}$, uniform upper volume and diameter bounds, and a uniform lower area bound on the smallest minimal surface, we find a subsequence which converges in both the Gromov-Hausdorff and the Sormani-Wenger Intrinsic Flat sense to a flat $3$-torus.
description: 15 pages. We correct and simplify the argument for Theorem 0.3. The statements of the main theorems have not changed
Non-spectral relaxation in one dimensional Ornstein-Uhlenbeck processes
Creators: name: Toenjes, R.
name: Sokolov, I. M.
name: Postnikov, E. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistics Theory (math.ST)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The relaxation of a dissipative system to its equilibrium state often shows a multiexponential pattern with relaxation rates, which are typically considered to be independent of the initial condition. The rates follow from the spectrum of a Hermitian operator obtained by a similarity transformation of the initial Fokker-Planck operator. However, some initial conditions are mapped by this similarity transformation to functions which grow at infinity. These cannot be expanded in terms of the eigenfunctions of an Hermitian operator, and show different relaxation patterns. Considering the exactly solvable examples of Gaussian and generalized Lévy Ornstein-Uhlenbeck processes (OUPs) we show that the relaxation rates belong to the Hermitian spectrum only if the initial condition belongs to the domain of attraction of the stable distribution defining the noise. While for an ordinary OUP initial conditions leading to non-spectral relaxation can be considered exotic, for generalized OUPs driven by Lévy noise these are the rule.
description: 4 pages, 1 figure
Peponocephala electra
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Peponocephala
Peponocephala electra

description: Peponocephala electra (Gray, 1846). Zool. Voy. H.M.S. "Erebus” and "Terror,” 1:35. TYPE LOCALITY: Unknown. DISTRIBUTION: World-wide, in tropical waters. COMMENT: Traditionally this species was included in the genus Lagenorhynchus, which is prefered by JGM and RLB but not DWR, WFP, and TK. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002005001001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 294, DOI: 10.5281/zenodo.7352983
Ultrafast optical control of magnetization in EuO thin films
Creators: name: Makino, T.
name: Liu, F.
name: Yamasaki, T.
name: Kozuka, Y.
name: Ueno, K.
name: Tsukazaki, A.
name: Fukumura, T.
name: Kong, Y.
name: Kawasaki, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: All-optical pump-probe detection of magnetization precession has been performed for ferromagnetic EuO thin films at 10 K. We demonstrate that the circularly-polarized light can be used to control the magnetization precession on an ultrafast time scale. This takes place within the 100 fs duration of a single laser pulse, through combined contribution from two nonthermal photomagnetic effects, i.e., enhancement of the magnetization and an inverse Faraday effect. From the magnetic field dependences of the frequency and the Gilbert damping parameter, the intrinsic Gilbert damping coefficient is evaluated to be α \approx 3\times10^-3.
description: 5 pages, 3 figures, accepted for publication in Phys. Rev. B
Towards Logarithmic GLSM: The r-spin case
Creators: name: Chen, Qile
name: Janda, Felix
name: Ruan, Yongbin
name: Sauvaget, Adrien
Publisher: name: arXiv
Year: 2018
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14N35, 14D23

description: In this article, we establish the logarithmic foundation for compactifying the moduli stacks of the gauged linear sigma model using stable log maps of Abramovich-Chen-Gross-Siebert. We then illustrate our method via the key example of Witten's $r$-spin class to construct a proper moduli stack with a reduced perfect obstruction theory whose virtual cycle recovers the $r$-spin virtual cycle of Chang-Li-Li. Indeed, our construction of the reduced virtual cycle is built upon the work of Chang-Li-Li by appropriately extending and modifying the Kiem-Li cosection along certain logarithmic boundary. In the subsequent article, we push the technique to a general situation. One motivation of our construction is to fit the gauged linear sigma model in the broader setting of Gromov-Witten theory so that powerful tools such as virtual localization can be applied. A project along this line is currently in progress leading to applications including computing loci of holomorphic differentials, and calculating higher genus Gromov-Witten invariants of quintic threefolds.
description: v2: agrees with published version
Charged black holes in a six-dimensional vector-tensor theory
Creators: name: Shiraishi, Kiyoshi
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a six-dimensional vector-tensor gravitation theory compactified to M_4 x S^2. Here, static spherically-symmetric solutions to the field equations of the theory are investigated. We examine the case that the magnetic charge of the "black hole" is small compared with that located in the "center" of the extra sphere. The Hawking temperature of the black hole is calculated in a simple case.
description: 8 pages, no figure
Robert-Henri Bautier,  John W. Baldwin avec le concours de Françoise Gasparri, Michel Nortier, Elisabeth Lalou (Hrsg.), Les registres de Philippe Auguste. Vol. I: Texte, 1992
Creators: name: Schneidmüller, Bernd
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 23 Nr. 1 (1996)
Higgs to mu tau Decay in Supersymmetry without R Parity
Creators: name: Arhrib, Abdesslam
name: Cheng, Yifan
name: Kong, Otto C. W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter, we report on lepton flavor violating Higgs decay into mu+tau in the framework of the generic supersymmetric standard model without R parity and list interesting combinations of R-parity violating parameters. We impose other known experimental constraints on the parameters of the model and show our results from the R-parity violating parameters. In our analysis, the branching ratio of Higgs to mu+tau can exceed 10^{-5} within admissible parameter space.
description: 16 pages, 3 figures, 1 table. Version published in Europhysics Letters
Independence of Maxwell's equations: A Bäcklund-transformation view
Creators: name: Papachristou, C. J.
name: Magoulas, A. N.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: It is now widely accepted that the Maxwell equations of Electrodynamics constitute a self-consistent set of four independent partial differential equations. According to a certain school of thought, however, half of these equations - namely, those expressing the two Gauss' laws for the electric and the magnetic field - are redundant since they can be "derived" from the remaining two laws and the principle of conservation of charge. The status of the latter principle is thus elevated to a law of Nature more fundamental than, say, Coulomb's law. In this note we examine this line of reasoning and we propose an approach according to which the Maxwell equations may be viewed as a Backlund transformation relating fields and sources. The conservation of charge and the electromagnetic wave equations then simply express the integrability conditions of this transformation.
description: 8 pages; final, published version
Citizen Science - A Collaborative Transdisciplinary Practice at the heart of Open Science
Creators: name: Gold, Margaret
Publisher: name: Zenodo
Year: 2023

description: The GW4 Alliance, an alliance of four of the UK's most research-intensive and innovative universities: Bath, Bristol, Cardiff and Exeter, hosted the inaugural GW4 Open Research Week from 20th - 24th November 2023, with a focus  on the theme of the Theory of Change, showcasing a broad range of open research practices which make research more accessible, transparent, reproducible, and visible.
In this talk on Citizen Science as a Collaborative Transdisciplinary Practice, Margaret Gold of Leiden University spoke about opening up science to the participation of societal actors,  gave a report from the field of Citizen Science on developments at the global, national, regional, and local levels, and  explored what this means for researchers and research institutes in the context of Open Science. 
Hosted by the GW4 Alliance and open to all.
Detailed background dynamics and trans-planckian effects in loop quantum cosmology
Creators: name: Martineau, Killian
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Cosmology appears as the most promising way to test and constrain quantum gravity theories. Loop quantum gravity is among the most advanced attempts to perform a non-perturbative quantization of general relativity. Its cosmological counterpart, loop quantum cosmology, has clear predictions both for the cosmological background and for the perturbations. In particular, the initial Big Bang singularity is replaced by a bounce due to quantum geometry effects. In this proceeding I will focus on new results obtained in loop quantum cosmology: i) the prediction of the duration of inflation as a function of all the unknown parameters of the model and ii) new primordial power spectra obtained with modified dispersion relations accounting for trans-planckian effects.
description: 4 pages, 2 figures, Proceedings of the 15th Marcel Grossmann Meeting - MG15, July 1-7 2018, University of Rome "La Sapienza"
Quantum discord for multipartite coherent states interpolating between Werner and Greenberger-Horne-Zeilinger states
Creators: name: Daoud, M.
name: Laamara, R. Ahl
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The quantum discord is used as measure of quantum correlations for two families of multipartite coherent states. The first family interpolates between generalized GHZ states and generalized Werner states. The second one is an interpolation between generalized GHZ and the ground state of the multipartite quantum system. Two inequivalent ways to split the system in a pair of qubits are introduced. The explicit expressions of quantum quantum discord in multipartite coherent states are derived. Its evaluation uses the Koashi-Winter relation in optimizing the conditional entropy. The temporal evolution of quantum correlations (quantum discord and entanglement) is also discussed.
Is a single photon's wave front observable?
Creators: name: Zagoskin, A. M.
name: Wilson, R. D.
name: Everitt, M.
name: Savel'ev, S.
name: Gulevich, D. R.
name: Allen, J.
name: Dubrovich, V. K.
name: Il'ichev, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The ultimate goal and the theoretical limit of weak signal detection is the ability to detect a single photon against a noisy background. [...] In this paper we show, that a combination of a quantum metamaterial (QMM)-based sensor matrix and quantum non-demolition (QND) readout of its quantum state allows, in principle, to detect a single photon in several points, i.e., to observe its wave front. Actually, there are a few possible ways of doing this, with at least one within the reach of current experimental techniques for the microwave range. The ability to resolve the quantum-limited signal from a remote source against a much stronger local noise would bring significant advantages to such diverse fields of activity as, e.g., microwave astronomy and missile defence. The key components of the proposed method are 1) the entangling interaction of the incoming photon with the QMM sensor array, which produces the spatially correlated quantum state of the latter, and 2) the QND readout of the collective observable (e.g., total magnetic moment), which characterizes this quantum state. The effects of local noise (e.g., fluctuations affecting the elements of the matrix) will be suppressed relative to the signal from the spatially coherent field of (even) a single photon.
description: 13 pages, 4 figures
Measurements of magnetization on the Sierpiński carpet
Creators: name: Genzor, Jozef
name: Gendiar, Andrej
name: Nishino, Tomotoshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Phase transition of the classical Ising model on the Sierpiński carpet, which has the fractal dimension $\log_3^{~} 8 \approx 1.8927$, is studied by an adapted variant of the higher-order tensor renormalization group method. The second-order phase transition is observed at the critical temperature $T_{\rm c}^{~} \approx 1.478$. Position dependence of local functions is studied through impurity tensors inserted at different locations on the fractal lattice. The critical exponent $β$ associated with the local magnetization varies by two orders of magnitude, depending on lattice locations, whereas $T_{\rm c}^{~}$ is not affected. Furthermore, we employ automatic differentiation to accurately and efficiently compute the average spontaneous magnetization per site as a first derivative of free energy with respect to the external field, yielding the global critical exponent of $β\approx 0.135$.
description: 10 pages, 16 figures
Thomas S. Burns, Rome and the Barbarians, 100 B.C.—A.D. 400
Creators: name: Wolters, Reinhard
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Thomas S. Burns, Rome and the Barbarians, 100 B.C.—A.D. 400. Ancient Society and
History. The Johns Hopkins University Press, Baltimore, Maryland/USA, 2003.
ISBN 0-8018-7306-1. 461 Seiten.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 84 Nr. 2 (2006)
Impact of intrinsic biophysical diversity on the activity of spiking neurons
Creators: name: Yim, Man Yi
name: Aertsen, Ad
name: Rotter, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: We study the effect of intrinsic heterogeneity on the activity of a population of leaky integrate-and-fire neurons. By rescaling the dynamical equation, we derive mathematical relations between multiple neuronal parameters and a fluctuating input noise. To this end, common input to heterogeneous neurons is conceived as an identical noise with neuron-specific mean and variance. As a consequence, the neuronal output rates can differ considerably, and their relative spike timing becomes desynchronized. This theory can quantitatively explain some recent experimental findings.
description: 4 pages, 5 figures
Bo Gyllensvärd (†)/Peter Harbison/Morten Axboe/Jan Peder Lamm/Torun Zachrisson /Synnöve Reisborg, Excavations at Helgö XVI
Creators: name: Hårdh, Brigitta
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Bo Gyllensvärd (†)/Peter Harbison/Morten Axboe/Jan Peder Lamm/Torun Zachrisson
/Synnöve Reisborg, Excavations at Helgö XVI. Exotic and Sacral Finds from Helgö.
Kungl. Vitterhets Historie och Antikvitets Akademien Stockholm 2004. ISBN 91-
7402-339-X. 182 Seiten mit zahlreichen Abbildungen.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 84 Nr. 2 (2006)
Superconductivity, charge- or spin-density wave, and metal-nonmetal transition in BaTi$_{2}$(Sb$_{1-x}$Bi$_{x}$)$_{2}$O
Creators: name: Zhai, Hui-Fei
name: Jiao, Wen-He
name: Sun, Yun-Lei
name: Bao, Jin-Ke
name: Jiang, Hao
name: Yang, Xiao-Jun
name: Tang, Zhang-Tu
name: Tao, Qian
name: Xu, Xiao-Feng
name: Li, Yu-Ke
name: Cao, Chao
name: Dai, Jian-Hui
name: Xu, Zhu-An
name: Cao, Guang-Han
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have performed an isovalent substitution study in a layered titanium oxypnictide system BaTi$_{2}$(Sb$_{1-x}$Bi$_{x}$)$_{2}$O (0$\leq x\leq$ 0.40) by the measurements of x-ray diffraction, electrical resistivity and magnetic susceptibility. The parent compound BaTi$_{2}$Sb$_{2}$O is confirmed to exhibit superconductivity at 1.5 K as well as charge- or spin-density wave (CDW/SDW) ordering below 55 K. With the partial substitution of Sb by Bi, the lattice parameters $a$, $c$ and $c/a$ all increase monotonically, indicating negative chemical pressure and lattice distortion on the (super)conducting Ti$_2$Sb$_2$O-layers. The Bi doping elevates the superconducting transition temperature to its maximum $T_c$=3.7 K at $x=$0.17, and then $T_c$ decreases gradually with additional Bi doping. A metal-to-nonmetal transition takes place around $x$=0.3, and superconductivity at $\sim$1K exists at the nonmetal side. The CDW/SDW anomaly, in comparison, is rapidly suppressed by the Bi doping, and vanishes for $x\geq$0.17. The results are discussed in terms of negative chemical pressure and disorder effect.
description: 5 pages, 5 figures. Minor changes were made
Gerard Jentgens, Die Alamannen
Creators: name: Theune, Claudia
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Gerard Jentgens, Die Alamannen. Methoden und Begriffe der ethnischen Deutung archäologischer
Funde und Befunde. Freiburger Beiträge zur Archäologie und Geschichte des
ersten Jahrtausends, Bd. 4. Verlag Marie Leidorf GmbH, Rahden/Westf., Leidorf 2001.
ISBN 3-89646-764-6. ISSN 1437-1707. 212 Seiten mit 33 Abbildungen.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 84 Nr. 2 (2006)
ЎЗБЕКИСТОН РЕСПУБЛИКАСИ ОИЛА ҚОНУНЧИЛИГИНИ ТАКОМИЛЛАШТИРИШ ИСТИҚБОЛЛАРИ
Creators: name: Хатамов, Р.А.
Publisher: name: Zenodo
Year: 2023

description: Бугунги шиддат билан ўзгариб бораётган глобаллашув даврига келиб ҳам Ўзбекистон ўз истиқболи ва келажагини оилани ривожлантириш, уни эъзозлашда, деб билаётгани барчамизга маълум. Шундан келиб чиқиб, миллий қадрият ва анъаналаримизни сақлаган ҳолда замонавий, намунали ва фаровон оилани барпо этиш давлат сиёсатининг устувор йўналишларидан бирига айлангани ҳам сир эмас. Зеро, муҳтарам юртбошимиз таъкидлаганларидек «Оила кичик ватан, оила тинч бўлса, бахтли бўлса, ватан тинч бўлади».
Multivariate Conditional Transformation Models
Creators: name: Klein, Nadja
name: Hothorn, Torsten
name: Barbanti, Luisa
name: Kneib, Thomas
Publisher: name: arXiv
Year: 2019
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Regression models describing the joint distribution of multivariate response variables conditional on covariate information have become an important aspect of contemporary regression analysis. However, a limitation of such models is that they often rely on rather simplistic assumptions, e.g. a constant dependency structure that is not allowed to vary with the covariates or the restriction to linear dependence between the responses only. We propose a general framework for multivariate conditional transformation models that overcomes these limitations and describes the entire distribution in a tractable and interpretable yet flexible way conditional on nonlinear effects of covariates. The framework can be embedded into likelihood-based inference, including results on asymptotic normality, and allows the dependence structure to vary with covariates. In addition, the framework scales well beyond bivariate response situations, which were the main focus of most earlier investigations. We illustrate the application of multivariate conditional transformation models in a trivariate analysis of childhood undernutrition and demonstrate empirically that our approach can be beneficial compared to existing benchmarks such that complex truly multivariate data-generating processes can be inferred from observations.
Octavian Liviu Şovan, Necropola de tip Sântana de Mureş-Černjachov de la Mihălăşeni
Creators: name: Popa, Alexandru
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu:  Octavian Liviu Şovan, Necropola de tip Sântana de Mureş-Černjachov de la Mihălăşeni (Jud. Botoşani). Bibliotheca Archaeologica „Hierasus“, Monographica 1 (Târgovişte, Cetatea
de Scaun 2005). ISBN 973-7925-51-3. 354 Seiten, 390 Tafeln und 1 Beilage.
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 86 Nr. 1 (2008)
Zur absoluten Datierung des ersten früheisenzeitlichen Horizontes auf dem nördlichen Zentralbalkan
Creators: name: Pabst, Sabine
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: -
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 86 Nr. 2 (2008)
A foraminiferal sea-level reconstruction from Pauatahanui Inlet, southern North Island, New Zealand
Creators: name: King, Daniel
name: Newnham, Rewi
name: Gehrels, Roland
name: Clark, Kate
name: Rees, Andrew
name: Garrett, Ed
Publisher: name: Open Access Victoria University of Wellington | Te Herenga Waka
Year: 2021
Subjects: subject: 40305 Marine Geoscience
subject: FOS: Earth and related environmental sciences
subject: 40605 Palaeoclimatology
subject: 40606 Quaternary Environments

description: Vertical land movement associated with interseismic subsidence and slow-slip events pose a major complicating factor when understanding how sea-level rise is likely to affect New Zealand's capital city of Wellington. To understand how these factors have affected sea level in the long-term, and thereby gain geological context for these movements, the nearest undisturbed salt marsh (Pauatahanui Inlet) was surface sampled and cored. These samples were used to assess the relationship between species of foraminifera (a group of testate protists) and elevation, then apply these relationships down-core to calculate past sea level. The nearest continuous GPS station (Paekakariki Hill) displays 1.7±0.35 mm/yr subsidence since its installation in the year 2000 (Tenzer and Fadil, 2016). However, according to a variety of transfer functions (statistical techniques which relate foraminiferal assemblage to elevation), our sediment core data indicate that, since the 1855 earthquake (which leaves a very distinct signature in the record), relative sea level has risen at Pauatahanui by ~1.4 to 1.6 mm/yr. This is less than what would be expected from subsidence alone, yet also must incorporate a significant signal from anthropogenic sea-level rise. We therefore interpret that the slow subsidence in the cGPS record likely indicates a short-term signal which, over the course of the past century, has been counteracted by the combined influence of events such as slow-slip associated with the Kapiti Coast source region, post-and co-seismic uplift, and possibly variations in subsidence rate. This, combined with the lower than expected rates of sea-level rise at the Wellington tide gauge from nearby cGPS stations, suggests that it is unwise to base local sea level projections on the observed recent net subsidence alone without factoring in the long-term effect of slow-slip and co-seismic uplift
A Glance into the Anatomy of Monotonic Maps
Creators: name: Buzyakova, Raushan
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 26A48, 54F05, 06B30

description: Given an autohomeomorphism on an ordered topological space or its subspace, we show that it is sometimes possible to introduce a new topology-compatible order on that space so that the same map is monotonic with respect to the new ordering. We note that the existence of such a re-ordering for a given map is equivalent to the map being conjugate (topologically equivalent) to a monotonic map on some homeomorphic ordered space. We observe that the latter cannot always be chosen to be order-isomorphic to the original space. Also, we identify other routes that may lead to similar affirmative statements for other classes of spaces and maps.
Eine Kultstätte der Jastorf-Zeit bei Hohenaverbergen, Kr. Verden
Creators: name: Oldenburg, Heinz
name: Schünemann, Detlef
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 36 (1967): Nachrichten aus Niedersachsens Urgeschichte
Pseudorca Reinhardt 1862
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Delphinidae
Pseudorca

description: Pseudorca Reinhardt, 1862. Overs. Danske Vidensk. Selsk. Forh., p. 151. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411002006000000.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 295, DOI: 10.5281/zenodo.7352983
Spätkaiserzeitlicher Import in Seulingen, Ldkr. Göttingen
Creators: name: Grote, Klaus
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 67 (1998): Nachrichten aus Niedersachsens Urgeschichte
Group representation for even and odd involutive commutative residuated chains
Creators: name: Jenei, Sándor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Rings and Algebras (math.RA)
subject: Logic (math.LO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: For odd and for even involutive, commutative residuated chains a representation theorem is presented in this paper by means of direct systems of abelian o-groups equipped with further structure. This generalizes the corresponding result of J. M. Dunn about finite Sugihara monoids.
description: This is the version which appeared in Studia Logica
Ujawnianie nieobecności Zbigniew Warpechowski na wystawie polskiej sztuki współczesnej „Atelier ’72” w Galerii Demarco w Edynburgu
Creators: name: Kuryłek, Dominik
Publisher: name: Pamiętnik Sztuk Pięknych / Fine Arts Diary
Year: 2019

description: Pamiętnik Sztuk Pięknych / Fine Arts Diary, No 9 (2015): Pamiętnik Sztuk Pięknych / Fine Arts Diary
Direct probe of ferromagnetic proximity effect at the interface in Fe/SnTe heterostructure by polarized neutron reflectometry
Creators: name: Akiyama, Ryota
name: Ishikawa, Ryo
name: Akutsu, Kazuhiro
name: Nakanishi, Ryosuke
name: Tomohiro, Yuta
name: Watanabe, Kazumi
name: Iida, Kazuki
name: Mitome, Masanori
name: Hasegawa, Shuji
name: Kuroda, Shinji
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Introducing magnetic order into a topological insulator (TI) system has been attracting much attention with an expectation of realizing exotic phenomena such as quantum anomalous Hall effect (QAHE) or axion insulator states. The magnetic proximity effect (MPE) is one of the promising schemes to induce the magnetic order on the surface of TI without introducing disorder accompanied by doping magnetic impurities in TI. In this study, we investigate the MPE at the interface of a heterostructure consisting of a topological crystalline insulator (TCI) SnTe and Fe by employing polarized neutron reflectometry. The ferromagnetic order penetrates $\sim$ 3 nm deep into the SnTe layer from the interface with Fe, which persists up to room temperature. Our findings demonstrate that the interfacial magnetism is induced by the MPE on the surface of TCI preserving the coherent topological states, which is essential for the bulk-edge correspondence, without introducing disorder arising from a random distribution magnetic impurities. This opens up a way for realizing next generation electronics, spintronics, and quantum computational devices by making use of the characteristics of TCI.
Magnetic measurements and kinetic energy of the superconducting condensate in SmBa_2Cu_3O_{7-δ}
Creators: name: Peña, J. P.
name: B., D. Martínez
name: Vargas, C. A. Parra
name: Cunha, A. G.
name: Pimentel, J. L.
name: Pureur, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report in-field kinetic energy results in the temperature region closely below the transition temperature of two differently prepared polycrystalline samples of the superconducting cuprate SmBa$_{\text{2}}$Cu$_{\text{3}}$O$_{7-δ}$. The kinetic energy was determined from magnetization measurements performed above the irreversibility line defined by the splitting between the curves obtained according the ZFC and FC prescriptions. The results are analyzed in the intermediate field regime where the London approximation can be used for describing the magnetization. From the analysis, estimations were carried out for the penetration depth and the upper critical field of the studied samples.The difference between the kinectic energy magnitudes for the two studied samples is ascribed to effects from granularity.
description: 11 pages, 6 figures, accepted for publication in Brazilian Journal of Physics Vol. 42
Real-life relevant face perception is not captured by the N170 but reflected in later potentials: A comparison of 2D and virtual reality stimuli
Creators: name: Sagehorn, Merle
name: Johnsdorf, Marike
name: Kisker, Joanna
name: Sylvester, Sophia
name: Gruber, Thomas
name: Schöne, Benjamin
Publisher: name: Universität Osnabrück
Year: 2023
Subjects: subject: face perception
subject: N170
subject: virtual reality
subject: late potentials
subject: realistic conditions
subject: ecological validity
subject: EEG
subject: 150 - Psychologie

description: The perception of faces is one of the most specialized visual processes in the human brain and has been investigated by means of the early event-related potential component N170. However, face perception has mostly been studied in the conventional laboratory, i.e., monitor setups, offering rather distal presentation of faces as planar 2D-images. Increasing spatial proximity through Virtual Reality (VR) allows to present 3D, real-life-sized persons at personal distance to participants, thus creating a feeling of social involvement and adding a self-relevant value to the presented faces. The present study compared the perception of persons under conventional laboratory conditions (PC) with realistic conditions in VR. Paralleling standard designs, pictures of unknown persons and standard control images were presented in a PC- and a VR-modality. To investigate how the mechanisms of face perception differ under realistic conditions from those under conventional laboratory conditions, the typical face-specific N170 and subsequent components were analyzed in both modalities. Consistent with previous laboratory research, the N170 lost discriminatory power when translated to realistic conditions, as it only discriminated faces and controls under laboratory conditions. Most interestingly, analysis of the later component [230–420 ms] revealed more differentiated face-specific processing in VR, as indicated by distinctive, stimulus-specific topographies. Complemented by source analysis, the results on later latencies show that face-specific neural mechanisms are applied only under realistic conditions (A video abstract is available in the Supplementary material and via YouTube: https://youtu.be/TF8wiPUrpSY).