cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Analytic semigroups approaching a Schrödinger group on real foliated metric manifolds
Creators: name: Banerjee, Rudrajit
name: Niedermaier, Max
Publisher: name: arXiv
Year: 2025
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: On real metric manifolds admitting a co-dimension one foliation, sectorial operators are introduced that interpolate between the generalized Laplacian and the d'Alembertian. This is used to construct a one-parameter family of analytic semigroups that remains well-defined into the near Lorentzian regime. In the strict Lorentzian limit we identify a sense in which a well-defined Schrödinger evolution group arises. For the analytic semigroups we show in addition that: (i) they act as integral operators with kernels that are jointly smooth in the semigroup time and both spacetime arguments. (ii) the diagonal of the kernels admits an asymptotic expansion in (shifted) powers of the semigroup time whose coefficients are the Seeley-DeWitt coefficients evaluated on the complex metrics.
description: 52 pages
Aeronaves no tripuladas: su aplicación como elemento de innovación en las terminales de pasajeros
Creators: name: Salinas, Elena Valverde
Publisher: name: Zenodo
Year: 2021
Subjects: Digitalización
Puerto Inteligente
Tecnologías Verdes
Terminal de pasajeros
UAV

description: Nowadays, the port sector has been undergoing a series of changes and challenges due to the fact that international trade via sea and cruise tourism has been increasingly intense due to globalization. The automation and digitization of information and processes is essential to achieve this modernization and evolution towards “Smart Ports” that are based on the use of these technologies to increase the level of efficiency in ports. Added to this, another challenge is to include these technologies in passenger terminals in order to ensure protection of the people and control the environmental impact caused by the pollution produced by vessels, above all by cruise ships. The methodology and sources that have been used in this assignment have been to go to studies carried out previously by other authors and the compilation of international organizations regulations and articles. The assignment has been focused on the discussion of the implications of the implementation of new technologies, as UAV in passenger terminals and its benefits related to security and air quality control near port cities in order to promote port sustainability.
Antiprotons from Dark Matter: Effects of a Position-Dependent Diffusion Coefficient
Creators: name: Perelstein, Maxim
name: Shakya, Bibhushan
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Energetic antiprotons in cosmic rays can serve as an important indirect signature of dark matter. Conventionally, the antiproton flux from dark matter decays or annihilations is calculated by solving the transport equation with a space-independent diffusion coefficient within the diffusion zone of the galaxy, and assuming free propagation outside this zone. Antiproton sources outside of the diffusion zone are ignored. In reality, it is far more likely that the diffusion coefficient increases smoothly with distance from the disk, and the outlying part of the dark matter halo ignored in the conventional approach can be significant, containing as much as 90% of the galactic dark matter by mass in some models. We extend the conventional approach to address these issues. We obtain analytic approximations and numerical solutions for antiproton flux assuming that the diffusion coefficient increases exponentially with the distance from the disk, and including contributions from dark matter annihilations/decays in essentially the full dark matter halo. We find that the antiproton flux predicted in this model deviates from the conventional calculation for the same dark matter parameters by up to about 25%.
description: minor corrections and clarifications. main results and conclusions unchanged. final version accepted for publication in PRD
Limit Theorems For Quantum Walks Associated with Hadamard Matrices
Creators: name: Ampadu, Clement
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 81T25

description: We study a one-parameter family of discrete-time quantum walk models on the line and in the xy-plane associated with the Hadamard walk. Weak convergence in the long-time limit of all moments of the walker's pseudo-velocity on the line and in the xy-plane is proved. Symmetrization on the line and in the xy-plane is theoretically investigated, leading to the resolution of the Konno-Namiki-Soshi conjecture in the special case of symmetrization of the unbiased Hadamard walk on the line . A necessary condition for the existence of a phenomenon known as localization is given.
Advancing cervical cancer diagnosis and screening with spectroscopy and machine learning
Creators: name: Ramirez, Carlos A. Meza
name: Greenop, Michael
name: Almoshawah, Yasser A.
name: Hirsch, Pierre L. Martin
name: Rehman, Ihtesham U.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Space Science
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Mental Health

description: In the UK alone, the incidence of cervical cancer is increasing, hence an urgent need for early and rapid detection of cancer before it develops. Spectroscopy in conjunction with machine learning offers a disruptive technology that promises to pick up cancer early as compared to the current diagnostic techniques used. This review article explores the different spectroscopy techniques that have been used for the analysis of cervical cancer. Along with the extensive description of spectroscopic techniques, the various machine learning techniques are also described as well as the applications that have been explored in the diagnosis of cervical cancer. This review delimits the literature specifically associated with cervical cancer studies performed solely with the use of a spectroscopy technique, and machine learning. Although there are several methods and techniques to detect cervical cancer, the clinical sector requires to introduce new diagnostic technologies that help improve the quality of life of patients. These innovative technologies involve spectroscopy as a qualitative method and machine learning as a quantitative method. In this article, both the techniques and methodologies that allow and promise to be a new screening tool for the detection of cervical cancer are covered.
Interference and Switching of Josephson current carried by nonlocal spin-entangled electrons in a SQUID-like system with quantum dots
Creators: name: Wang, Zhi
name: Hu, Xiao
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Josephson current of spin-entangled electrons through the two branches of a SQUID-like structure with two quantum dots exhibits a magnetic-flux response different from the conventional Josephson current. Due to their interference, the period of maximum Josephson current changes from $h/2e$ to $h/e$, which can be used for detecting the Cooper-pair splitting efficiency. The nonlocal spin entanglement provides a quantum mechanical functionale for switching on and off this novel Josephson current, and explicitly a switch is formulated by including a pilot junction. It is shown that the device can be used to measure the magnitude of split-tunneling Josephson current.
description: 4 pages, 4 figures; to appear in Phys. Rev. Lett
Network reconstruction from random phase-resetting
Creators: name: Levnajić, Zoran
name: Pikovsky, Arkady
Publisher: name: arXiv
Year: 2010
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose a novel method of reconstructing the topology and interaction functions for a general oscillator network. An ensemble of initial phases and the corresponding instantaneous frequencies is constructed by repeating random phase-resets of the system dynamics. The desired details of network structure are then revealed by appropriately averaging over the ensemble. The method is applicable for a wide class of networks with arbitrary emergent dynamics, including full synchrony.
Hawking radiation as tunneling from charged black holes in 0A string theory
Creators: name: Kim, Hongbin
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: There has been much work on explaining Hawking radiation as a quantum tunneling process through horizons. Basically, this intuitive picture requires the calculation of the imaginary part of the action for outgoing particle. And two ways are known for achieving this goal: the null-geodesic method and the Hamilton-Jacobi method. We apply these methods to the charged black holes in 2D dilaton gravity which is originated from the low energy effective theory of type 0A string theory. We derive the correct Hawking temperature of the black holes including the effect of the back reaction of the radiation, and obtain the entropy by using the 1st law of black hole thermodynamics. For fixed-charge ensemble, the 0A black holes are free of phase transition and thermodynamically stable regardless of mass-charge ratio. We show this by interpreting the back reaction term as the inverse of the heat capacity of the black holes. Finally, the possibility of the phase transition in the fixed-potential ensemble is discussed.
description: 12 pages; v2: references added, revised with some changes in formula and unaltered conclusions, to be published in Phys. Lett. B
Aharonov-Anandan phase in Lipkin-Meskov-Glick model
Creators: name: Yang, Da-Bao
name: Chen, Jing-Ling
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the system of several interacting spins, geometric phases have been researched intensively.However, the studies are mainly focused on the adiabatic case (Berry phase), so it is necessary for us to study the non-adiabatic counterpart (Aharonov and Anandan phase). In this paper, we analyze both the non-degenerate and degenerate geometric phase of Lipkin-Meskov-Glick type model, which has many application in Bose-Einstein condensates and entanglement theory. Furthermore, in order to calculate degenerate geometric phases, the Floquet theorem and decomposition of operator are generalized. And the general formula is achieved.
Euseius plaudus
Creators: name: Argolo, Poliane Sá
name: Vital Santos, Renata M.
name: Leão Bittencourt, Maria A.
name: Da Silva Noronha, Aloyséia C.
name: De Moraes, Gilberto J.
name: Oliveira, Anibal Ramadan
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Euseius
Euseius plaudus

description: Euseius plaudus Denmark & Muma, 1973
 Euseius plaudus Denmark & Muma, 1973: 263.
 Euseius plaudus.––Moraes et al., 2004: 74; Chant & McMurtry, 2007: 123. Record in Bahia: Fiaboe et al., 2007: 4.
description: Published as part of Argolo, Poliane Sá, Vital Santos, Renata M., Leão Bittencourt, Maria A., Da Silva Noronha, Aloyséia C., De Moraes, Gilberto J. & Oliveira, Anibal Ramadan, 2017, Phytoseiid mites (Acari: Phytoseiidae) associated with tropical ornamental plants, with a checklist and a key to the species of Bahia, Brazil, pp. 345-364 in Zootaxa 4258 (4) on page 351, DOI: 10.11646/zootaxa.4258.4.3, http://zenodo.org/record/570106
Charge Carrier Extraction by Linearly Increasing Voltage:Analytic framework and ambipolar transients
Creators: name: Lorrmann, Jens
name: Badada, Bekele Homa
name: Inganäs, Olle
name: Dyakonov, Vladimir
name: Deibel, Carsten
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Up to now the basic theoretical description of charge extraction by linearly increasing voltage (CELIV) is solved for a low conductivity approximation only. Here we present the full analytical solution, thus generalize the theoretical framework for this method. We compare the analytical solution and the approximated theory, showing that especially for typical organic solar cell materials the latter approach has a very limited validity. Photo-CELIV measurements on poly(3-hexyl thiophene-2,5-diyl):[6,6]-phenyl-C61 butyric acid methyl ester based solar cells were then evaluated by fitting the current transients to the analytical solution. We found that the fit results are in a very good agreement with the experimental observations, if ambipolar transport is taken into account, the origin of which we will discuss. Furthermore we present parametric equations for the mobility and the charge carrier density, which can be applied over the entire experimental range of parameters.
description: 8 pages, 5 figures
Twistor space observables and quasi-amplitudes in 4D higher spin gravity
Creators: name: Colombo, Nicolo
name: Sundell, Per
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Vasiliev equations facilitate globally defined formulations of higher-spin gravity in various correspondence spaces associated with different phases of the theory. In the four-dimensional case this induces a map from a generally covariant formulation in spacetime with higher-derivative interactions to a formulation in terms of a deformed symplectic structure on a noncommutative doubled twistor space, sending spacetime boundary conditions to various sectors of an associative star-product algebra. We look at observables given by integrals over twistor space defining composite zero-forms in spacetime that do not break any local symmetries and that are closed on shell. They can be evaluated locally in spacetime and interpreted as building blocks for dual amplitudes. To regularize potential twistor-space divergencies arising in their curvature expansion, we propose a closed-contour prescription that respects associativity and hence higher-spin gauge symmetry. As a sample calculation, we examine next-to-leading corrections to quasi-amplitudes for twistor-space plane waves, and find cancellations that we interpret using transgression properties in twistor space.
description: 53 pages, enlarged version with clarifications added, changes in presentation, typos corrected and references added
Farmers’ motivations for landrace cereal cultivation in Sweden
Creators: name: Ortman, Tove
name: Sandström, Emil
name: Bengtsson, Jan
name: Watson, Christine A
name: Bergkvist, Göran
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: Plant Biology
subject: Virology

description: The interest in landrace cereals, i.e. genetically diverse varieties with historical origin, has increased in recent decades. While several studies exist on farmer’s motivations to grow landraces in a Global South context, investigations are much less common in the Global North. Through an interview study with 32 Swedish farmers that cultivate landrace cereals on a commercial scale, farmers’ motivations to grow landrace cereals were explored. The farms in the study ranged from medium sized to large. The majority were located in areas with marginal agricultural land and less fertile soil. All farms sold the landrace cereals at advantageous prices as niche products and all except one were certified organic. The farmers’ motivations for growing landraces were grouped around three themes: i) sustainable farming systems; ii) suitable agronomic traits; and iii) economic incentives. The first and overarching theme was that cultivation of landrace cereals fitted well with the farmers’ ideals on sustainable farming, with for example less intensive weed control and novel intercropping systems, as well as enabling production of wheat with baking quality on marginal agricultural land. Cultivation of landrace cereals was framed in contrast not only to conventional farming, but also to ‘conventionalised’ high input organic farming. The farmers regarded producing and marketing landrace cereals as an important foundation for more sustainable and multifunctional farming and food systems. This reflected the farmers’ perception of a lack of modern varieties suited for these systems as well as the ability of landraces to buffer risks of crop failure on marginal land.
Constraining the Emissivity of Ultrahigh Energy Cosmic Rays in the Distant Universe with the Diffuse Gamma-ray Emission
Creators: name: Wang, Xiang-Yu
name: Liu, Ruo-Yu
name: Aharonian, Felix
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Ultra-high cosmic rays (UHECRs) with energies >10^19 eV emitted at cosmological distances will be attenuated by cosmic microwave and infrared background radiation through photohadronic processes. Lower energy extra-galactic cosmic rays (~10^18-10^19 eV) can only travel a linear distance smaller than ~Gpc in a Hubble time due to the diffusion if the extra-galactic magnetic fields are as strong as nano Gauss. These prevent us from directly observing most of the UHECRs in the universe, and thus the observed UHECR intensity reflects only the emissivity in the nearby universe within hundreds of Mpc. However, UHECRs in the distant universe, through interactions with the cosmic background photons, produce UHE electrons and gamma-rays that in turn initiate electromagnetic cascades on cosmic background photons. This secondary cascade radiation forms part of the extragalactic diffuse GeV-TeV gamma-ray radiation and, unlike the original UHECRs, is observable. Motivated by new measurements of extragalactic diffuse gamma-ray background radiation by Fermi/LAT, we obtained upper limits placed on the UHECR emissivity in the distant universe by requiring that the cascade radiation they produce not exceed the observed levels. By comparison with the gamma-ray emissivity of candidate UHECR sources (such as GRBs and AGNs) at high-redshifts, we find that the obtained upper limit for a flat proton spectrum is ~10^1.5 times larger than the gamma-ray emissivity in GRBs and ~10 times smaller than the gamma-ray emissivity in BL Lac objects. In the case of iron nuclei composition, the derived upper limit of the UHECR emissivity is a factor of 3-5 times higher. Robust upper limit on the cosmogenic neutrino flux is further obtained, which is marginally reachable by the Icecube detector and the next-generation detector JEM-EUSO.
description: 14 pages, 8 figures, Replaced to match the published version
sigma and f_0(980) substructures from gamma-gamma to pi-pi, J/psi, phi radiative and D_s semi-leptonic decays
Creators: name: Mennessier, G.
name: Narison, S.
name: Wang, X. -G.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Using an improved "analytic K-matrix model", we reconsider the extraction of the sigma/f_0(600) and f_0(980) gamma-gamma widths from gamma-gamma to pi-pi scatterings data of Crystal Ball and Belle. Our main results are summarized in Tables 3 and 4. The averaged sigma "direct width" to gamma-gamma is 0.16(3) keV which confirms a previous result of [1] and which does neither favour a large four-quark (diquark-antidiquark) nor a molecule nor a pure \bar qq component. The "direct width" of the f_0(980) of 0.28(2) keV is much larger than the four-quark expectation but can be compatible with a \bar ss or gluonium component. We also found that the rescattering part of the amplitude is relatively large indicating an important contribution of the meson loops in the determination of the gamma-gamma total widths. This is mainly due to the large couplings of the sigma and f_0(980) to pi-pi and/or \bar KK, which can also be due to a light scalar gluonium with large OZI violating couplings but not necessary to a four-quark or molecule state. Our average results for the total (direct+rescattering) gamma-gamma widths: Gamma_sigma^{tot}= 3.08(82) keV, Gamma_{f_0}^{tot}= 0.16(1) keV} are comparable with the ones from dispersion relations and PDG values. Using the parameters from QCD spectral sum rules, we complete our analysis by showing that the production rates of unmixed scalar gluonia sigma_B(1) and G (1.5-1.6) agree with the data from J/ψ, phi radiative and D_s semi-leptonic decays.
description: 11 pages, 6 figures (1 more figure added in Fig 6), 4 tables : version appeared on-line in doi:10.1016/j.physletb.2010.12.001
Overview of transverse spin physics in the PHENIX experiment
Creators: name: Boer, Marie
Publisher: name: Zenodo
Year: 2021
Subjects: dis17
phenix
transverse spin asymmetry
p+p
p+al
p+au
run15
spin
π0
η
heavy flavor
J/Ψ
mid-rapidity
forward-rapidity
backward-rapidity
dimuon
d-meson
muon

description: Talk presented at the Deep Inelastic Scattering 2017 conference
Intracranial manifestations in neurofibromatosis 1
Creators: name: Sellmer, Laura
Publisher: name: University of British Columbia
Year: 2017

description: Introduction: Gliomas in the brain and the optic pathway affect up to 20% of all children with neurofibromatosis 1 (NF1); however, their frequency and natural history in adults is poorly described. Our objectives were to characterize the frequency and natural history of gliomas seen in NF1 patients by serial head magnetic resonance imaging (MRI) and to investigate associations between combined annotation-dependent depletion (CADD) scores and the presence of MRI features of NF1. Methods: 1775 head and whole-body MRI scans of 562 unselected NF1 patients were collected at the University Hospital Hamburg-Eppendorf in Hamburg, Germany. All scans were analyzed, and the frequency and natural history of gliomas was determined. In addition, the constitutional disease-causing variants of the NF1 gene in 283 patients were annotated with CADD scores, and genotype-phenotype correlations were performed. Results: Between 1 and 12 MRI scans were collected for each patient; the median length of follow-up was 3.7 years. We found the prevalence of non-optic gliomas to be 4.3%, with a median age at glioma diagnosis at 21.2 years. The prevalence of optic pathway gliomas (OPGs) was 9.3%, with a median age at diagnosis at 12.1 years. We determined the rates of appearance, progression and regression of both of these tumour types. We found that individual CADD scores were associated with the presence of plexiform neurofibromas (but not with the presence of UBOs or optic gliomas) in NF1 patients in whom the pathogenic mutation had been identified. Conclusion: The frequencies of gliomas in the brain and optic pathway is higher in adults with NF1 than previously reported. NF1 patients with constitutional mutations associated with high CADD scores appear to be at higher risk to develop plexiform neurofibromas than other NF1 patients.
Quantum state tomography of an itinerant squeezed microwave field
Creators: name: Mallet, F.
name: Castellanos-Beltran, M. A.
name: Ku, H. S.
name: Glancy, S.
name: Knill, E.
name: Irwin, K. D.
name: Hilton, G. C.
name: Vale, L. R.
name: Lehnert, K. W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We perform state tomography of an itinerant squeezed state of the microwave field prepared by a Josephson parametric amplifier (JPA). We use a second JPA as a pre-amplifier to improve the quantum efficiency of the field quadrature measurement (QM) from 2% to 36 +/- 4%. Without correcting for the detection inefficiency we observe a minimum quadrature variance which is 69 +/- 8% of the variance of the vacuum. We reconstruct the state's density matrix by a maximum likelihood method and infer that the squeezed state has a minimum variance less than 40% of the vacuum, with uncertainty mostly caused by calibration systematics.
description: 8 pages, 5 figures, published version to contain higher resolution figures
Comment on "Two-spinon and four-spinon continuum in a frustrated ferromagnetic spin-1/2 chain" by M. Enderle et al
Creators: name: Drechsler, S. -L.
name: Nishimoto, S.
name: Kuzian, R.
name: Malek, J.
name: Lorenz, W. E. A.
name: Richter, J.
name: Brink, J. van den
name: Schmitt, M.
name: Rosner, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that LiVCuO4 should be described by strongly ferromagnetically coupled Heisenberg antiferromagnetic chains (HAC) in sharp contrast with the effective exchange integrals Ji given in Enderle et al., Phys. Rev. Lett. vol. 104, 237207 (2010), and the main issues of that work, namely, (i) LiVCuO4 is well described by two weakly ferromagnetically coupled interpenetrating Heisenberg antiferromagnetic spin-1/2 chains, (ii) the extracted exchange integrals J1, J2 agree with a previous spin-wave description (Enderle et al., Euphys. Lett. vol. 70, 237 (2005)), (iii) the spectral density of inelastic neutron scattering (INS) above 10 meV is ascribed to a 4-spinon continuum. Applying exact diagonalization and DMRG methods to fit their INS and magnetization M(H) data, supported by two independent microscopic methods (5-band Hubbard model and LSDA+U calculations), we demonstrate that LiCuVO4 exhibits strong inchain frustration with alpha =-J2/J1 < 1, i.e. strong coupling of the HAC at odds with (i). An alternative phenomenological set in accord with various experimental results is proposed. In view of the recent possible discovery of quantum-spin nematics and Bose condensation of two-magnon bound states (M. Zhitomirsky et al. arXiv:1003.4096v2 (2010), L. Svistov et al. ibid. 1005.5668v2 (2010)) in LiCuVO4 precise knowledge of the main J-values is of key importance.
description: 1 page, 1 figure, revised comment, analysis of magnetization data included, one author added; response to arXiv:1009.1564 by Enderle et al., changed abstract
Classification of super domains and super domain walls in permalloy antidot lattices
Creators: name: Hu, X. K.
name: Sievers, S.
name: Müller, A.
name: Janke, V.
name: Schumacher, H. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the remanent domain configurations of rectangular permalloy antidot lattices over a range of lattice parameters. The influence of antidot diameter, antidot spacing, and the aspect ratio of the lattice on the remanent domain configuration are investigated by magnetic force microscopy and supported by micromagnetic simulations. In the remanent state, areas of cells with the same orientation of average magnetization form magnetic super domains separated by super domain walls (SDWs). Two types of SDWs are identified. The first type is characterized by low stray field energy, is linear, and expands over many lattice constants. In contrast the second type shows high stray field energy and is situated at kinks of low energy SDWs. Its width can vary from a minimum of two lattice cells up to several lattice constants, depending on the lattice parameters. The occurrence and structure of these two types of SDWs as function of lattice parameters are classified and discussed in terms of the interplay of stray field and exchange energy.
description: 6 pages, 7 figures
Conserved charges for black holes in Einstein-Gauss-Bonnet gravity coupled to nonlinear electrodynamics in AdS space
Creators: name: Miskovic, Olivera
name: Olea, Rodrigo
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Motivated by possible applications within the framework of anti-de Sitter gravity/Conformal Field Theory (AdS/CFT) correspondence, charged black holes with AdS asymptotics, which are solutions to Einstein-Gauss-Bonnet gravity in D dimensions, and whose electric field is described by a nonlinear electrodynamics (NED) are studied. For a topological static black hole ansatz, the field equations are exactly solved in terms of the electromagnetic stress tensor for an arbitrary NED Lagrangian, in any dimension D and for arbitrary positive values of Gauss-Bonnet coupling. In particular, this procedure reproduces the black hole metric in Born-Infeld and conformally invariant electrodynamics previously found in the literature. Altogether, it extends to D>4 the four-dimensional solution obtained by Soleng in logarithmic electrodynamics, which comes from vacuum polarization effects. Fall-off conditions for the electromagnetic field that ensure the finiteness of the electric charge are also discussed. The black hole mass and vacuum energy as conserved quantities associated to an asymptotic timelike Killing vector are computed using a background-independent regularization of the gravitational action based on the addition of counterterms which are a given polynomial in the intrinsic and extrinsic curvatures.
description: 30 pages, no figures; a few references added; final version for PRD
ADAM: Analysis of Discrete Models of Biological Systems Using Computer Algebra
Creators: name: Hinkelmann, Franziska
name: Brandon, Madison
name: Guang, Bonny
name: McNeill, Rustin
name: Blekherman, Grigoriy
name: Veliz-Cuba, Alan
name: Laubenbacher, Reinhard
Publisher: name: arXiv
Year: 2010
Subjects: subject: Commutative Algebra (math.AC)
subject: Algebraic Geometry (math.AG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Background: Many biological systems are modeled qualitatively with discrete models, such as probabilistic Boolean networks, logical models, Petri nets, and agent-based models, with the goal to gain a better understanding of the system. The computational complexity to analyze the complete dynamics of these models grows exponentially in the number of variables, which impedes working with complex models. Although there exist sophisticated algorithms to determine the dynamics of discrete models, their implementations usually require labor-intensive formatting of the model formulation, and they are oftentimes not accessible to users without programming skills. Efficient analysis methods are needed that are accessible to modelers and easy to use. Method: By converting discrete models into algebraic models, tools from computational algebra can be used to analyze their dynamics. Specifically, we propose a method to identify attractors of a discrete model that is equivalent to solving a system of polynomial equations, a long-studied problem in computer algebra. Results: A method for efficiently identifying attractors, and the web-based tool Analysis of Dynamic Algebraic Models (ADAM), which provides this and other analysis methods for discrete models. ADAM converts several discrete model types automatically into polynomial dynamical systems and analyzes their dynamics using tools from computer algebra. Based on extensive experimentation with both discrete models arising in systems biology and randomly generated networks, we found that the algebraic algorithms presented in this manuscript are fast for systems with the structure maintained by most biological systems, namely sparseness, i.e., while the number of nodes in a biological network may be quite large, each node is affected only by a small number of other nodes, and robustness, i.e., small number of attractors.
Veríssimo Serrão, Joaquim, História de Portugal. Vol. IX. O Terceiro Liberalismo (1851-1890) e Vol. X. A Queda da Monarquia (1890-1910). Ed. VERBO. 2 vols. de 424 e 544 ps., 230x165 respectivamente. Lisboa 1986 e 1988
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1986

description: Theologica, v. 21 n. 1-4 (1986)
Transverse spectral functions and Dzyaloshinskii-Moriya interactions in XXZ spin chains
Creators: name: Karimi, Hamed
name: Affleck, Ian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently much progress has been made in applying field theory methods, first developed to study X-ray edge singularities, to interacting one dimensional systems in order to include band curvature effects and study edge singularities at arbitrary momentum. Finding experimental confirmations of this theory remains an open challenge. Here we point out that spin chains with uniform Dzyaloshinskii-Moriya (DM) interactions provide an opportunity to test these theories since these interactions may be exactly eliminated by a gauge transformation which shifts the momentum. However, this requires an extension of these X-ray edge methods to the transverse spectral function of the xxz spin chain in a magnetic field, which we provide.
Observation of a red-blue detuning asymmetry in matter-wave superradiance
Creators: name: Deng, L.
name: Hagley, E. W.
name: Cao, Qiang
name: Wang, Xiaorui
name: Luo, Xinyu
name: Wang, Ruquan
name: Yang, Fan
name: Zhou, Xiaoji
name: Chen, Xuzong
name: Payne, M. G.
name: Zhan, Mingsheng
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the first experimental observations of strong suppression of matter-wave superradiance using blue-detuned pump light and demonstrate a pump-laser detuning asymmetry in the collective atomic recoil motion. In contrast to all previous theoretical frameworks, which predict that the process should be symmetric with respect to the sign of the pump-laser detuning, we find that for condensates the symmetry is broken. With high condensate densities and red-detuned light, the familiar distinctive multi-order, matter-wave scattering pattern is clearly visible, whereas with blue-detuned light superradiance is strongly suppressed. In the limit of a dilute atomic gas, however, symmetry is restored.
description: Accepted by Phys. Rev. Lett
An evaluation of the Australian Research Council's journal ranking
Creators: name: Vanclay, Jerome K.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: As part of its program of 'Excellence in Research for Australia' (ERA), the Australian Research Council ranked journals into four categories (A*, A, B, C) in preparation for their performance evaluation of Australian universities. The ranking is important because it likely to have a major impact on publication choices and research dissemination in Australia. The ranking is problematic because it is evident that some disciplines have been treated very differently than others. This paper reveals weaknesses in the ERA journal ranking and highlights the poor correlation between ERA rankings and other acknowledged metrics of journal standing. It highlights the need for a reasonable representation of journals ranked as A* in each scientific discipline.
description: 14 pages, 4 figures, 7 tables
Nodes vs. minima in the energy gap of iron-pnictides from field-induced anisotropy
Creators: name: Vorontsov, A. B.
name: Vekhter, I.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We develop the formalism for computing the oscillations of the specific heat and thermal transport under rotated magnetic field in multiband superconductors with anisotropic gap and apply it to iron-pnictides. We show that these oscillations change sign at low temperatures and fields, which strongly influences the conclusions about the gap structure based on experiment. We find that recent measurements of the specific heat oscillations indicate that the iron-based superconductors possess an anisotropic gap with deep minima or nodes close to the line connecting electron and hole pockets. We make predictions for the behavior of the thermal conductivity that will help distinguish between these cases.
description: 4+3 pages, published version with supplement
Thermal spin-transfer in Fe-MgO-Fe tunnel junctions
Creators: name: Jia, Xingtao
name: Xia, Ke
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We compute thermal spin transfer torques (TST) in Fe-MgO-Fe tunnel junctions using a first principles wave function-matching method. At room temperature, the TST in a junction with 3 MgO monolayers amounts to 10^-7J/m^2/K, which is estimated to cause magnetization reversal for temperature differences over the barrier of the order of 10 K. The large TST can be explained by multiple scattering between interface states through ultrathin barriers. The angular dependence of the TST can be very skewed, possibly leading to thermally induced high-frequency generation.
description: 5 pages, 5 figures
A unitary quantum lattice gas algorithm for two dimensional quantum turbulence
Creators: name: Zhang, Bo
name: Vahala, George
name: Vahala, Linda
name: Soe, Min
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum vortex structures and energy cascades are examined for two dimensional quantum turbulence (2D QT) at zero temperature. A special unitary evolution algorithm, the quantum lattice gas (QLG) algorithm, is employed to simulate the Bose-Einstein condensate (BEC) governed by the Gross-Pitaevskii (GP) equation. A parameter regime is uncovered in which, as in 3D QT, there is a short Poincaré recurrence time. It is demonstrated that such short recurrence times are destroyed as the nonlinear interaction is strengthened. The similar loss of Poincaré recurrence is also reported in 3D QT [1] Energy cascades for 2D QT are considered to examine whether 2D QT exhibits inverse cascades as in 2D classical turbulence. In the parameter regime considered, the spectra analysis reveals no such dual cascades-dual cascades being a hallmark of 2D classical turbulence.
Energy dependent forward B -> J/Psi measurements in p+p collisions at PHENIX
Creators: name: Li, Xuan
Publisher: name: Zenodo
Year: 2021
Subjects: dis17
phenix
forward-rapidity
b-meson
J/Ψ
fvtx
p+p
bottom
heavy flavor
vtx
dca
cross section

description: Talk presented at the Deep Inelastic Scattering 2017 conference (presented by Marie Boer on behalf of Xuan Li)
Relic gravitational waves: latest revisions and preparations for new data
Creators: name: Zhao, Wen
name: Grishchuk, L. P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The forthcoming release of data from the Planck mission, and possibly from the next round of Wilkinson Microwave Anisotropy Probe (WMAP) observations, make it necessary to revise the evaluations of relic gravitational waves in the existing data and, at the same time, to refine the assumptions and data analysis techniques in preparation for the arrival of new data. We reconsider with the help of the commonly used CosmoMC numerical package the previously found indications of relic gravitational waves in the 7-year (WMAP7) data. The CosmoMC approach reduces the confidence of these indications from approximately 2$σ$ level to approximately 1$σ$ level, but the indications do not disappear altogether. We critically analyze the assumptions that are currently used in the Cosmic Microwave Background (CMB) data analyzes and outline the strategy that should help avoid the oversight of relic gravitational waves in the future CMB data. In particular, it is important to keep away from the unwarranted assumptions about density perturbations. The prospects of confident detection of relic gravitational waves by the Planck satellite have worsened, but they are still good. It appears that more effort will be required in order to mitigate the foreground contamination.
description: 11 pages, 4 figures, 3 tables; v.3: improvements, published version
Leggett-type nonlocal realist inequalities without any constraint on the geometrical alignment of measurement settings
Creators: name: Rai, Ashutosh
name: Home, Dipankar
name: Majumdar, A. S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Leggett-type nonlocal realist inequalities that have been derived to date are all contingent upon suitable geometrical constraints to be strictly satisfied by the spatial arrangement of the relevant measurement settings. This undesirable restriction is removed in the present work by deriving appropriate forms of nonlocal realist inequalities, one of which involve the least number of settings compared to all such inequalities derived earlier. The way such inequalities would provide a logically firmer basis for a clearer testing of Leggett-type nonlocal realist model vis-a-vis quantum mechanics is explained.
description: Revised form accepted for publication in "Phys. Rev A" (7 pages, 2 figures). Revised argument presented in the last para of the proof of the theorem in Sec III (C), the results remain unchanged. A typo corrected in the Eq. (8)
Euseius sibelius De Leon 1962
Creators: name: Argolo, Poliane Sá
name: Vital Santos, Renata M.
name: Leão Bittencourt, Maria A.
name: Da Silva Noronha, Aloyséia C.
name: De Moraes, Gilberto J.
name: Oliveira, Anibal Ramadan
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Mesostigmata
Phytoseiidae
Euseius
Euseius sibelius

description: Euseius sibelius (De Leon, 1962)
 Amblyseius (Typhlodromalus) sibelius De Leon, 1962: 21.
 Euseius sibelius.––Moraes et al., 2004: 83; Chant & McMurtry, 2007: 123. Records in Bahia: Euseius sibelius.–– Farias et al., 1981: 316; Moraes & McMurtry, 1983: 140; Moraes et al., 1993: 80; Fiaboe et al., 2007: 4.
description: Published as part of Argolo, Poliane Sá, Vital Santos, Renata M., Leão Bittencourt, Maria A., Da Silva Noronha, Aloyséia C., De Moraes, Gilberto J. & Oliveira, Anibal Ramadan, 2017, Phytoseiid mites (Acari: Phytoseiidae) associated with tropical ornamental plants, with a checklist and a key to the species of Bahia, Brazil, pp. 345-364 in Zootaxa 4258 (4) on page 351, DOI: 10.11646/zootaxa.4258.4.3, http://zenodo.org/record/570106
HFOLD - a program package for calculating two-body MSSM Higgs decays at full one-loop level
Creators: name: Frisch, W.
name: Eberl, H.
name: Hlucha, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: HFOLD (Higgs Full One Loop Decays) is a Fortran program package for calculating all MSSM Higgs two-body decay widths and the corresponding branching ratios at full one-loop level. The package is done in the SUSY Parameter Analysis convention and supports the SUSY Les Houches Accord input and output format.
description: 18 pages, 2 figures, version accepted for publication in CPC
Supplemental Tables S1
Creators: name: Kirschner, Sarah
Publisher: name: figshare
Year: 2021
Subjects: subject: 60603 Animal Physiology - Systems
subject: FOS: Biological sciences
subject: 111103 Nutritional Physiology
subject: FOS: Health sciences

description: Short-chain fatty acid concentrations in different blood vessels in the fasted and postprandial states.
Very High Lorentz Factor Fireballs and Gamma-Ray Burst Spectra
Creators: name: Ioka, Kunihito
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Collisionless entrainment of the surrounding matter imports the relativistic baryon component in the Gamma-Ray Burst (GRB) fireball frame. We show that half the fireball energy can be transferred from radiation to the comoving hot motions of baryons under the photosphere. The yet baryon-poor fireball can reexpand to a very high Lorentz factor (VHLF) Γ~ 10^3-10^6 by its own relativistic collisionless pressure beyond the photosphere (so-called collisionless bulk acceleration), leading to internal and external shocks. A simple synchrotron emission from the VHLF internal shocks produces (i) the extra power-law spectral component with variability observed in the Fermi GeV bursts, up to the TeV range for the future Cherenkov Telescope Array (CTA), (ii) the GeV onset delay with a weak luminosity dependence t_{delay} ~ L^{-1/5}, and (iii) the spectral break of GRB 090926 by the synchrotron cooling break or the maximum synchrotron cutoff limited by the dynamical time, not by the e+- creation cutoff. The relativistic baryon component could also heat the photospheric thermal photons into the main GRB Band spectrum via pp, pγ(Bethe-Heitler and photomeson), and Coulomb thermalization processes. In this hot photosphere-internal-external shock model, we can predict the anticorrelation of ~TeV neutrinos and GeV gamma-rays, which may be detectable using IceCube. The spectral peak and luminosity (Yonetoku) relation is also reproduced if the progenitor stars are nearly identical. We also discuss the steep/shallow decay of early X-ray afterglows and short GRBs.
description: 21 pages, 6 figures, final version to be published in Progress of Theoretical Physics
Varea, J.L. — Saez, R.M., Los niños leen. Ed. EUNSA, 1 vol. de 304 ps., 180x110. Pamplona 1982
Creators: name: Arieiro, José
Publisher: name: Theologica
Year: 1986

description: Theologica, v. 21 n. 1-4 (1986)
Detecting paired and counterflow superfluidity via dipole oscillations
Creators: name: Hu, Anzi
name: Mathey, L.
name: Tiesinga, Eite
name: Danshita, Ippei
name: Williams, Carl J.
name: Clark, Charles W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We suggest an experimentally feasible procedure to observe paired and counterflow superfluidity in ultra-cold atom systems. We study the time evolution of one-dimensional mixtures of bosonic atoms in an optical lattice following an abrupt displacement of an additional weak confining potential. We find that the dynamic responses of the paired superfluid phase for attractive inter-species interactions and the counterflow superfluid phase for repulsive interactions are qualitatively distinct and reflect the quasi long-range order that characterizes these states. These findings suggest a clear experimental procedure to detect these phases, and give an intuitive insight into their dynamics.
description: 4 pages,5 figures