cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Orbital ordering in transition-metal compounds: I. The 120-degree model
Creators: name: Biskup, Marek
name: Chayes, Lincoln
name: Nussinov, Zohar
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the classical version of the 120-degree model. This is an attractive nearest-neighbor system in three dimensions with XY (rotor) spins and interaction such that only a particular projection of the spins gets coupled in each coordinate direction. Although the Hamiltonian has only discrete symmetries, it turns out that every constant field is a ground state. Employing a combination of spin-wave and contour arguments we establish the existence of long-range order at low temperatures. This suggests a mechanism for a type of ordering in certain models of transition-metal compounds where the very existence of long-range order has heretofore been a matter of some controversy.
description: 40 pages, 1 eps fig; a revised version correcting a bunch of small errors
Magnetic field control of topological magnon-polaron bands in two-dimensional ferromagnets
Creators: name: Shen, Pengtao
name: Kim, Se Kwon
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study magnon-phonon hybrid excitations in a square lattice ferromagnet subjected to a magnetic field by varying the field direction. The bulk bands of hybrid excitations, which are referred to as magnon-polarons, are investigated by considering all three phonon modes: vertical phonon, transverse phonon, and longitudinal phonon. We show that the topological proprieties of three hybridizations are different in terms of the Berry curvature and the Chern numbers. We also find that the topological properties of the bands can be controlled by changing the direction of the magnetic field, exhibiting one or more topological phase transitions. The dependence of thermal Hall conductivity as a function of magnetic field direction is proposed as an experiment probe of our theoretical results.
Quantum superpositions of current states in Rydberg-atom networks
Creators: name: Perciavalle, Francesco
name: Rossini, Davide
name: Polo, Juan
name: Morsch, Oliver
name: Amico, Luigi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum simulation of many-body quantum systems using Rydberg-atom platforms has become of extreme interest in the last years. The possibility to realize spin Hamiltonians and the accurate control at the single atom level paved the way for the study of quantum phases of matter and dynamics. Here, we propose a quantum optimal control protocol to engineer current states: quantum states characterized by Rydberg excitations propagating in a given spatially closed tweezer networks. Indeed, current states with different winding numbers can be generated on demand. Besides those ones with single winding number, superposition of quantum current states characterized by more winding numbers can be obtained. The single current states are eigenstates of the current operator that therefore can define an observable that remains persistent at any time. In particular, the features of the excitations dynamics reflects the nature of current states, a fact that in principle can be used to characterize the nature of the flow experimentally without the need of accessing high order correlators.
description: 16 pages, 10 figures
Extension Theory and Fermionic Strongly Fusion 2-Categories (with an Appendix by Thibault Didier Décoppet and Theo Johnson-Freyd)
Creators: name: Décoppet, Thibault Didier
Publisher: name: arXiv
Year: 2024
Subjects: subject: Category Theory (math.CT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 18M20, 18N25

description: We study group graded extensions of fusion 2-categories. As an application, we obtain a homotopy theoretic classification of fermionic strongly fusion 2-categories. We examine various examples in detail.
description: Previously part of arXiv:2311.16827v1
Generalized nonlocal gravity framework based on Poincaré gauge theory
Creators: name: Puetzfeld, Dirk
name: Obukhov, Yuri N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We describe a framework for a generalized nonlocal gravity theory inspired by Poincaré gauge theory. Our theory provides a unified description of previous nonlocal extensions of Einstein's theory of gravitation, in particular it allows for a clear geometrical foundation. Furthermore, it incorporates recent simplifications for the ansatz of the nonlocality, which should allow for a systematic study of the impact of nonlocal concepts on observations.
description: 5 pages
Additional file 14 of Proteogenomic insights into the biology and treatment of pancreatic ductal adenocarcinoma
Creators: name: Tong, Yexin
name: Sun, Mingjun
name: Chen, Lingli
name: Wang, Yunzhi
name: Li, Yan
name: Li, Lingling
name: Zhang, Xuan
name: Cai, Yumeng
name: Qie, Jingbo
name: Pang, Yanrui
name: Xu, Ziyan
name: Zhao, Jiangyan
name: Zhang, Xiaolei
name: Liu, Yang
name: Tian, Sha
name: Qin, Zhaoyu
name: Feng, Jinwen
name: Zhang, Fan
name: Zhu, Jiajun
name: Xu, Yifan
name: Lou, Wenhui
name: Ji, Yuan
name: Zhao, Jianyuan
name: He, Fuchu
name: Hou, Yingyong
name: Ding, Chen
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 14: Fig. S14. Proteomic subtypes of CPTAC PDAC patients based on Fudan’s proteomic stratification, related to Fig. 6. A Consensus matrices of identified clusters (k = 2 to 5) of proteomic subtypes in CPTAC cohort based on Fudan’s proteomic stratification. B, C The consensus CDF (B) and delta area (change in CDF area) plots (C) are shown. D The heatmap depicting the relative abundance of signature proteins among three proteomic subtypes. E The association of three CPTAC proteomic subtypes based on our proteomic stratification with clinical outcomes. F Representative GO terms in CPTAC proteomic subtypes based on our proteomic stratification. G, H The boxplots indicating the protein expression of GRB7 (G), AKT2 and ERBB2 (H) among three proteomic subtypes in CPTAC cohort based on our proteomic stratification (Kruskal-Wallis test). I A volcano plot showing the prognosis associated characteristic proteins of three subgroups in CPTAC cohort based on our proteomic stratification. Red, proteins that negatively associated with prognosis in Fudan cohort; green, proteins that positively associated with prognosis in Fudan cohort. J The Sankey plot revealing the association between CPTAC subgroups and CPTAC subgroups based on our proteomic stratification. **** p < 1.0E-4, *** p < 1.0E-3, ** p < 1.0E-2, * p < 0.05, ns > 0.05.
How Could We Have Been So Wrong?
Creators: name: Main, Scott
name: Irwin, Scott H.
name: Sanders, Dwight R.
name: Main, Scott
name: Irwin, Scott H.
name: Sanders, Dwight R.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: Investments into commodity-linked investments have grown considerably since their popularity exploded—along with commodity prices—in 2006 through 2008. Numerous individuals and institutions have embraced alternative investments for their purported diversification properties and “equity-like” returns; yet, real-time performance has been disappointing. As an example, Morningstar reports that the iShares S&P GSCI Commodity Index Trust lost an annualized 9.1% in the 5 years ending December 31, 2012. The puzzling aspect of this poor performance is that it occurred at a time when the overall trend in commodity prices was sharply upward. In this paper, we explicitly show that the disappointing returns for commodity index investments were not directly caused by the futures market structure, i.e., “contango.” Rather, the implicit—and unavoidable—cost of holding physical commodities is inherent in futures prices and thereby creates a necessary performance “gap” between the returns to long-only futures positions and observed spot market prices.
Charging effects in biased molecular devices
Creators: name: Walczak, Kamil
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The influence of the charging effects on the transport characteristics of a molecular wire bridging two metallic electrodes in the limit of weak contacts is studied by generalized Breit-Wigner formula. Molecule is modeled as a quantum dot with discrete energy levels, while the coupling to the electrodes is treated within a broad band theory. Owing to this model we find self-consistent occupation of particular energy levels and orbital energies of the wire in the presence of transport. The nonlinear conductance and current-voltage characteristics are investigated as a function of bias voltage in the case of symmetric and asymmetric coupling to the electrodes. It is shown that the shape of that curves are determined by the combined effect of the electronic structure of the molecule and by electron-electron repulsion.
description: 5 pages, 3 figures; accepted in Physica E
Applications of model-aware reinforcement learning in Bayesian quantum metrology
Creators: name: Belliardo, Federico
name: Zoratti, Fabio
name: Giovannetti, Vittorio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An important practical problem in the field of quantum metrology and sensors is to find the optimal sequences of controls for the quantum probe that realize optimal adaptive estimation. In Belliardo et al., arXiv:2312.16985 (2023), we solved this problem in general, by introducing a procedure capable of optimizing a wide range of tasks in quantum metrology and estimation by combining model-aware reinforcement learning with Bayesian inference. We take a model-based approach to the optimisation where the physics describing the system is explicitly taken into account in the training through automatic differentiation. In this follow-up paper we present some applications of the framework. The first family of examples concerns the estimation of magnetic fields, hyperfine interactions, and decoherence times for electronic spins in diamond. For these examples, we perform multiple Ramsey measurements on the spin. The second family of applications concerns the estimation of phases and coherent states on photonic circuits, without squeezing elements, where the bosonic lines are measured by photon counters. This exposition showcases the broad applicability of the method, which has been implemented in the qsensoropt library released on PyPI, which can be installed with pip.
description: 35 pages, 16 figures
Do Roll Returns Really Exist? An Analysis of the S&P GSCI
Creators: name: Peterson, Paul E.
name: Peterson, Paul E.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: Roll returns for the S&P GSCI commodity index are analyzed using index calculation procedures for the S&P 500 stock market index. S&P GSCI daily index values are calculated and validated against the official index values for the five-year period January 2007-December 2011. Index values are then calculated using divisor adjustment methods for the S&P 500. Roll returns are found to be caused by the unique index calculation procedures used by the S&P GSCI during roll periods.
Kiwa Macpherson, Jones & Segonzac 2005
Creators: name: Baba, Keiji
name: Macpherson, Enrique
name: Poore, Gary C. B.
name: Ahyong, Shane T.
name: Bermudez, Adriana
name: Cabezas, Patricia
name: Lin, Chia-Wei
name: Nizinski, Martha
name: Rodrigues, Celso
name: Schnabel, Kareen E.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Kiwaidae
Kiwa

description: Genus Kiwa Macpherson, Jones & Segonzac, 2005
 Kiwa Macpherson et al., 2005: 712 (gender: feminine).
 Type species: Kiwa hirsuta Macpherson et al., 2005, by monotypy.
description: Published as part of Baba, Keiji, Macpherson, Enrique, Poore, Gary C. B., Ahyong, Shane T., Bermudez, Adriana, Cabezas, Patricia, Lin, Chia-Wei, Nizinski, Martha, Rodrigues, Celso & Schnabel, Kareen E., 2008, Catalogue of squat lobsters of the world (Crustacea: Decapoda: Anomura-families Chirostylidae, Galatheidae and Kiwaidae), pp. 1-220 in Zootaxa 1905 (1) on page 182, DOI: 10.11646/zootaxa.1905.1.1, http://zenodo.org/record/5134587
A density-functional study of charge doping in WO3
Creators: name: Walkingshaw, Andrew D.
name: Spaldin, Nicola A.
name: Artacho, Emilio
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The addition of electron donors to the vacant A site of defect-perovskite structure tungsten trioxide causes a series of structural and chemical phase transitions; for instance, in the well-known case of the sodium tungsten bronzes (NaxWO3). Here we calculate the effect of the addition of electronic charge to WO3 without the complication of also including sodium ions. Our density functional theory method enables isolation of electronic effects from the additional size, chemical, and disorder effects present in experimental samples. Our calculated low-temperature phase diagram between x=0 and x=1 moves from the initial low-temperature monoclinic phase through a second (centered) monoclinic phase, an orthorhombic phase, a tetragonal antiferroelectric, and an aristotypic cubic phase, in broad agreement with the experimentally-observed transformations in NaxWO3. Our work confirms that the observed structural transformations are driven primarily by electronic factors. We find that the dominant electronic effect is the covalent interaction between the tungsten 5d and oxygen 2p orbitals.
description: REVTeX, 7 pages, 6 figures: to be submitted to Physical Review B. Preliminary results were presented as a poster at the European Meeting on Ferroelectrics, Cambridge, 2003 v2: no changes at all to content. Figures renamed to conform to what the Physical Review B upload server expects
Additional file 1 of The association between FTO genotype with macronutrients and calorie intake in overweight adults
Creators: name: Mehrdad, Mahsa
name: Saeid Doaei
name: Gholamalizadeh, Maryam
name: Eftekhari, Mohammad Hassan
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Have Farmers Lost Confidence in Futures Markets?
Creators: name: Welch, Mark
name: Hogan, Rob
name: Williams, Emmy
name: Robinson, John
name: Anderson, David
name: Waller, Mark
name: Bevers, Stan
name: Amosson, Steve
name: McCorkle, Dean
name: Welch, Mark
name: Hogan, Rob
name: Williams, Emmy
name: Robinson, John
name: Anderson, David
name: Waller, Mark
name: Bevers, Stan
name: Amosson, Steve
name: McCorkle, Dean
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: Since 2007, the environment for trading futures contracts has changed significantly. In late 2012 graduates of the Texas A&M AgriLife Extension Master Marketer program were surveyed to assess the degree to which the changing climate of futures and options trading is impacting their confidence in futures markets and their perception of their ability to implement price risk management strategies.
Nonperturbative renormalization group approach to the Ising model: a derivative expansion at order $\partial^4$
Creators: name: Canet, L.
name: Delamotte, B.
name: Mouhanna, D.
name: Vidal, J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: On the example of the three-dimensional Ising model, we show that nonperturbative renormalization group equations allow one to obtain very accurate critical exponents. Implementing the order $\partial^4$ of the derivative expansion leads to $ν=0.632$ and to an anomalous dimension $η=0.033$ which is significantly improved compared with lower orders calculations.
description: 4 pages, 3 figures
Homochirality proliferation in space
Creators: name: Saito, Yukio
name: Hyuga, Hiroyuki
Publisher: name: arXiv
Year: 2004
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: To understand the chirality selection in the biological organic system, a simple lattice model of chemical reaction with molecular diffusion is proposed and studied by Monte Carlo simulations. In addition to a simple stochastic process of conversions between an achiral reactant A and chiral products, R and S molecules, a nonlinear autocatalysis is incorporated by enhancing the reaction rate from A to R (or S), when A is surrounded by more than one R (or S) molecules. With this nonlinear autocatalysis, the chiral symmetry between R and S is shown to be broken in a dense system. In a dilute solution with a chemically inactive solvent, molecular diffusion accomplishes chirality selection, provided that the initial concentration is higher than the critical value.
description: 10 pages, 4 figures
Measuring the Casimir-Polder potential with Unruh-DeWitt detector excitations
Creators: name: Dębski, Kacper
name: Grochowski, Piotr T.
name: Dragan, Andrzej
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a new method to measure Casimir-Polder force in an optical cavity by means of atomic excitations. We utilize a framework in which Unruh-DeWitt Hamiltonian mimics the full matter-field interaction and find a connection between the excitation rate of the two-level atom and the Casimir-Polder energy, allowing to map one onto the other. We argue that such a realization opens a route to study Casimir-Polder potentials through measurement of excited state's population in large, spatially compact ensembles of atoms.
description: 7 pages, 3 figures
Current experimental upper bounds on spacetime diffusion
Creators: name: Janse, Martijn
name: Uitenbroek, Dennis G.
name: van Everdingen, Loek
name: Plugge, Jaimy
name: Hensen, Bas
name: Oosterkamp, Tjerk H.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A consistent theory describing the dynamics of quantum systems interacting on a classical space-time was recently put forward by Oppenheim et al..[1, 2]. Quantum states may retain their coherence, at the cost of some amount of stochasticity of the spacetime metric, characterized by a spacetime diffusion parameter. Here, we report existing experimental upper bounds on such space-time diffusion, based on a review of several types of experiments with very low force noise over a broad range of test masses from single atoms to several kilograms. We find an upper bound at least 15 orders of magnitude lower as compared to the initial bounds for explicit models presented by Oppenheimn et al. The results presented here provide a path forward for future experiments that can help evaluate classical-quantum theories
description: 8 pages, 1 figure, 1 table
Risk Premiums and Forward Basis: Evidence from the Soybean Oil Market
Creators: name: Lewis, Karen E.
name: Manfredo, Mark R.
name: Altman, Ira
name: Sanders, Dwight R.
name: Lewis, Karen E.
name: Manfredo, Mark R.
name: Altman, Ira
name: Sanders, Dwight R.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: Soybean oil is a primary ingredient in a number of food products, and is also one of the primary oils used in the production of biodiesel. Thus the price volatility of soybean oil represents a major input price risk to food and energy companies. Forward pricing is often extended to end-users by soybean oil processors where the forward price quote is a function of futures price and basis. If the end-user locks in the basis component, the processor assumes the risk of any basis fluctuations. This research examines if soybean oil processors extract a premium for assuming this risk. Using forward basis quotes and realized basis values for soybean oil provided by The Trade News Service, Inc., it was found that soybean oil processors do not charge an embedded cost for their forward pricing services. Furthermore, the results suggest that the absence of a statistically significant embedded cost may be due to the inability of soybean oil processors to adequately forecast soybean oil basis levels.
Progress in cooling nanoelectronic devices to ultra-low temperatures
Creators: name: Jones, A. T.
name: Scheller, C. P.
name: Prance, J. R.
name: Kalyoncu, Y. B.
name: Zumbühl, D. M.
name: Haley, R. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Here we review recent progress in cooling micro/nanoelectronic devices significantly below 10 mK. A number of groups worldwide are working to produce sub-millikelvin on-chip electron temperatures, motivated by the possibility of observing new physical effects and improving the performance of quantum technologies, sensors and metrological standards. The challenge is a longstanding one, with the lowest reported on-chip electron temperature having remained around 4 mK for more than 15 years. This is despite the fact that microkelvin temperatures have been accessible in bulk materials since the mid 20th century. In this review we describe progress made in the last five years using new cooling techniques. Developments have been driven by improvements in the understanding of nanoscale physics, material properties and heat flow in electronic devices at ultralow temperatures, and have involved collaboration between universities and institutes, physicists and engineers. We hope that this review will serve as a summary of the current state-of-the-art, and provide a roadmap for future developments. We focus on techniques that have shown, in experiment, the potential to reach sub-millikelvin electron temperatures. In particular, we focus on on-chip demagnetisation refrigeration. Multiple groups have used this technique to reach temperatures around 1 mK, with a current lowest temperature below 0.5 mK.
description: 19 Pages, 13 Figures, 1 Table
Orbital order in classical models of transition-metal compounds
Creators: name: Nussinov, Zohar
name: Biskup, Marek
name: Chayes, Lincoln
name: Brink, Jeroen van den
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study the classical 120-degree and related orbital models. These are the classical limits of quantum models which describe the interactions among orbitals of transition-metal compounds. We demonstrate that at low temperatures these models exhibit a long-range order which arises via an "order by disorder" mechanism. This strongly indicates that there is orbital ordering in the quantum version of these models, notwithstanding recent rigorous results on the absence of spin order in these systems.
description: 7 pages, 1 eps fig
Additional file 18 of Proteogenomic insights into the biology and treatment of pancreatic ductal adenocarcinoma
Creators: name: Tong, Yexin
name: Sun, Mingjun
name: Chen, Lingli
name: Wang, Yunzhi
name: Li, Yan
name: Li, Lingling
name: Zhang, Xuan
name: Cai, Yumeng
name: Qie, Jingbo
name: Pang, Yanrui
name: Xu, Ziyan
name: Zhao, Jiangyan
name: Zhang, Xiaolei
name: Liu, Yang
name: Tian, Sha
name: Qin, Zhaoyu
name: Feng, Jinwen
name: Zhang, Fan
name: Zhu, Jiajun
name: Xu, Yifan
name: Lou, Wenhui
name: Ji, Yuan
name: Zhao, Jianyuan
name: He, Fuchu
name: Hou, Yingyong
name: Ding, Chen
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 18: Fig. S18. Characterization of ECM subtypes in PDAC, related to Fig. 7. A H&E-stained slides of samples of deserted, inter, reactive ECM subtypes. B The expression heatmap describing differentially expressed proteins and phosphoproteins among three ECM subtypes. The enriched biological pathways were annotated on the right. C Boxplot illustrating the purity of sample among ECM subtypes. D Boxplots showing the expression of ECM markers among ECM subtypes. E IHC profiling of ECM markers in ECM subtypes. F Heatmap of drug targets of deserted, inter, reactive ECM subtypes. Drugs are labeled on the left. G Boxplot illustrating the purity of sample among 5 immune subtypes. H The Sankey plot revealing the association between ECM subtypes and our immune subtypes. I The association of five immune clusters with clinical outcomes in reactive ECM subtype samples. J Heatmap showing the xCell signatures among five immune clusters in reactive ECM subtype samples. **** p < 1.0E-4, *** p < 1.0E-3, ** p < 1.0E-2, * p < 0.05, ns > 0.05.
Magnetic interactions in EuTe epitaxial layers and EuTe/PbTe superlattices
Creators: name: Kepa, H.
name: Springholz, G.
name: Giebultowicz, T. M.
name: Goldman, K. I.
name: Majkrzak, C. F.
name: Kacman, P.
name: Blinowski, J.
name: Holl, S.
name: Krenn, H.
name: Bauer, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The magnetic properties of antiferromagnetic (AFM) EuTe epitaxial layers and short period EuTe/PbTe superlattices (SLs), grown by molecular beam epitaxy on (111) BaF$_2$ substrates, were studied by magnetization and neutron diffraction measurements. Considerable changes of the Néel temperature as a function of the EuTe layer thickness as well as of the strain state were found. A mean field model, taking into account the variation of the exchange constants with the strain-induced lattice distortions, and the nearest neighbor environment of a Eu atoms, was developed to explain the observed $T_{\text N}$ changes in wide range of samples. Pronounced interlayer magnetic correlations have been revealed by neutron diffraction in EuTe/PbTe SLs with PbTe spacer thickness up to 60 Å. The observed diffraction spectra were analyzed, in a kinematical approximation, assuming partial interlayer correlations characterized by an appropriate correlation parameter. The formation of interlayer correlations between the AFM EuTe layers across the nonmagnetic PbTe spacer was explained within a framework of a tight-binding model. In this model, the interlayer coupling stems from the dependence of the total electronic energy of the EuTe/PbTe SL on the spin configurations in adjacent EuTe layers. The influence of the EuTe and PbTe layer thickness fluctuations, inherent in the epitaxial growth process, on magnetic properties and interlayer coupling is discussed.
description: 17 pages, 19 figures, accepted to PRB
A Nonparametric Search for Information Effects from USDA Reports
Creators: name: Dorfman, Jeffrey H.
name: Karali, Berna
name: Dorfman, Jeffrey H.
name: Karali, Berna
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: The question of report value has been unsettled in the literature with results varying somewhat across studies and across reports. We employ two nonparametric tests to investigate the potential information value of USDA crop and livestock reports. If the daily returns on futures contracts differ on days with report releases when compared to non-announcement days for a sizeable number of commodities, we consider the report to contain valuable information. Results indicate value in five of the USDA reports investigated, with six other reports showing little or no information value in the markets examined. Most of our results confirm and add robustness to earlier results, but there are some differences both for certain reports and certain commodities.
RESTRUCTURING OF BANKS IN INDIA-A CASE STUDY OF SBI AND ITS ASSOCIATE BANKS”
Creators: name: choudhary, kamna R
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 480101
subject: Banking, finance and securities law

description: The consolidation in Indian Financial sector a known trend. In year 2022 The nation’s economy witnessed the mega merger of 12 PSB into 4. The merger of SBI with its five subsidiary banks is the subject of this research. GOI decided to merge 5 SBI associated Banks plus BMB into SBI bank to make a strong single entity which is ready to face the global banking competition. The deal was the first huge scale consolidation of Indian banking Industry. A banking goliath with an asset book of Rs 37 lakh crore will be formed by the merger. The current study is done with the view to analyze the pre and post deal financial soundness of SBI using well established CAMEL framework. The objective behind the study is to examine the financial soundness of the new entity (SBI) using 18 ratios t-test and their mean difference. To check that do the synergy is realized by the new entity as expected. The analysis concludes with the observation that, despite the financial position's lack of apparent profitability, merger identified SBI as one of the largest banks globally.
Actuarially Fair or Foul? Asymmetric Information Problems in Dairy Margin Insurance
Creators: name: Newton, John
name: Thraen, Cameron S.
name: Newton, John
name: Thraen, Cameron S.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: There is a wide consensus in the academic literature that asymmetric information in the form of adverse selection and moral hazard has resulted in sizable financial outlays for governmentsponsored crop insurance programs - ultimately becoming a costly means of transferring risk from farmers to the government. In this analysis we combine simulation and structural modeling techniques to forecast dairy income-over-feed-cost margins and show how asymmetric information problems may drive industry consolidation, production growth, and unforeseen program costs for a recently proposed government-sponsored dairy producer margin insurance program. We conclude by presenting second-best solutions in contract design to the insurance problems of moral hazard and adverse selection.
Testing the Effectiveness of Using a Corn Call or a Feeder Cattle Put for Feeder Cattle Price Protection
Creators: name: Tejeda, Hernan A.
name: Feuz, Dillon M.
name: Tejeda, Hernan A.
name: Feuz, Dillon M.
Publisher: name: Unknown
Year: 2013
Subjects: Agricultural marketing

description: This paper studies the effect, from an options market perspective, that the substantial increase in corn prices and volatility has had on the feeder cattle market. An empirical study is conducted to compare the effectiveness of a feeder cattle operator using either a corn ‘call’ or a feeder cattle ‘put’ to mitigate the margin risk from price volatility. Specifically, the operator sets feeder cattle price conditions at different periods of the year and applies either option strategy. The period studied is from 2003 to 2012. Results are of higher margin variability for the latter years as anticipated – where corn faced much increased demand. In general, operations using a corn call resulted in a bit higher margin variability than operations using a feeder cattle put for most of the years considered. This is not as anticipated, given the broader and more diversified market for corn options – reflected in the much larger number of ‘at the money’ or nearest ‘in the money’ transactions at expiration - in comparison to the thinner feeder cattle options market. However, this may be due to the much fewer number of ‘at the money’ or nearest ‘in the money’ transactions for feeder cattle puts (i.e. many cases having no puts traded or be all ‘out of the money’), which results in less margin variability. Another finding is that operators who set price conditions in May (instead of July or October) generally through a corn call, did not experience substantial increase of margin variability - especially during a very volatile 2009 year. This may respond to mostly circumventing changing conditions in the corn market during summer and fall season, with the arrival of new crop information.
Quantum Many-Body Physics with Ultracold Polar Molecules: Nanostructured Potential Barriers and Interactions
Creators: name: Kruckenhauser, Andreas
name: Sieberer, Lukas M.
name: Tobias, William G.
name: Matsuda, Kyle
name: De Marco, Luigi
name: Li, Jun-Ru
name: Valtolina, Giacomo
name: Rey, Ana Maria
name: Ye, Jun
name: Baranov, Mikhail A.
name: Zoller, Peter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We design dipolar quantum many-body Hamiltonians that will facilitate the realization of exotic quantum phases under current experimental conditions achieved for polar molecules. The main idea is to modulate both single-body potential barriers and two-body dipolar interactions on a spatial scale of tens of nanometers to strongly enhance energy scales and, therefore, relax temperature requirements for observing new quantum phases of engineered many-body systems. We consider and compare two approaches. In the first, nanoscale barriers are generated with standing wave optical light fields exploiting optical nonlinearities. In the second, static electric field gradients in combination with microwave dressing are used to write nanostructured spatial patterns on the induced electric dipole moments, and thus dipolar interactions. We study the formation of inter-layer and interface bound states of molecules in these configurations, and provide detailed estimates for binding energies and expected losses for present experimental setups.
description: 21 pages, 7 figures
A multilevel analysis to systemic exposure: insights from local and system-wide information
Creators: name: Gandica, Yérali
name: Béreau, Sophie
name: Gnabo, Jean-Yves
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Finance (q-fin.GN)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: In the aftermath of the financial crisis, the growing literature on financial networks has widely documented the predictive power of topological characteristics (e.g. degree centrality measures) to explain the systemic impact or systemic vulnerability of financial institutions. In this work, we show that considering alternative topological measures based on local sub-network environment improves our ability to identify systemic institutions. To provide empirical evidence, we apply a two-step procedure. First, we recover network communities (i.e. close-peer environment) on a spillover network of financial institutions. Second, we regress alternative measures of vulnerability on three levels of topological measures: the global level (i.e. firm topological characteristics computed over the whole system), local level (i.e. firm topological characteristics computed over the community) and aggregated level by averaging individual characteristics over the community. The sample includes $46$ financial institutions (banks, broker-dealers, insurance and real-estate companies) listed in the Standard \& Poor's 500 index. Our results confirm the informational content of topological metrics based on close-peer environment. Such information is different from the one embeds in traditional system wide topological metrics and is proved to be predictor of distress for financial institutions in time of crisis.
description: 12 pages, 3 figures and 3 tables
Supporting Energy Policy Research with Large Language Models
Creators: name: Buster, Grant
name: Pinchuk, Pavlo
name: Barrons, Jacob
name: McKeever, Ryan
name: Levine, Aaron
name: Lopez, Anthony
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: The recent growth in renewable energy development in the United States has been accompanied by a simultaneous surge in renewable energy siting ordinances. These zoning laws play a critical role in dictating the placement of wind and solar resources that are critical for achieving low-carbon energy futures. In this context, efficient access to and management of siting ordinance data becomes imperative. The National Renewable Energy Laboratory (NREL) recently introduced a public wind and solar siting database to fill this need. This paper presents a method for harnessing Large Language Models (LLMs) to automate the extraction of these siting ordinances from legal documents, enabling this database to maintain accurate up-to-date information in the rapidly changing energy policy landscape. A novel contribution of this research is the integration of a decision tree framework with LLMs. Our results show that this approach is 85 to 90% accurate with outputs that can be used directly in downstream quantitative modeling. We discuss opportunities to use this work to support similar large-scale policy research in the energy sector. By unlocking new efficiencies in the extraction and analysis of legal documents using LLMs, this study enables a path forward for automated large-scale energy policy research.
Noncommuting charges can remove non-stationary quantum many-body dynamics
Creators: name: Majidy, Shayan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Studying noncommuting conserved quantities, or 'charges,' has revealed a conceptual puzzle: noncommuting charges hinder thermalization in some ways yet promote it in others. While many quantum systems thermalize according to the Eigenstate Thermalization Hypothesis (ETH), systems with 'dynamical symmetries' violate the ETH and exhibit non-stationary dynamics, preventing them from equilibrating, much less thermalizing. We demonstrate that each pair of dynamical symmetries corresponds to a specific charge. We find that introducing new charges that do not commute with existing ones disrupts these symmetries, thereby eliminating non-stationary dynamics and facilitating thermalization. We illustrate this behavior across various models, including the Hubbard model and Heisenberg spin chains. Our findings demonstrate that noncommuting charges can enhance thermalization by reducing the number of local observables that thermalize according to the ETH.
description: 7.5 pages
title: Effects of oral supplementation with Inositols in women with polycystic ovary syndrome undergoing in vitro fertilization: a long and windy road
Creators: name: Laganà, Antonio Simone
name: Aragona, Cesare
Publisher: name: Organisms. Journal of Biological Sciences
Year: 2019

description: Organisms. Journal of Biological Sciences, Vol 3, no 1 (2019)
Long lived dust rings around HD169142
Creators: name: Toci, Claudia
name: Lodato, Giuseppe
name: Fedele, Davide
name: Testi, Leonardo
name: Pinte, Christophe
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent ALMA observations of the protoplanetary disc around HD~169142 reveal a peculiar structure made of concentric dusty rings: a main ring at $\sim$20 au, a triple system of rings at $\sim 55-75$ au in millimetric continuum emission and a perturbed gas surface density from the $^{12}$CO,$^{13}$CO and C$^{18}$O$(J=2-1)$ surface brightness profile. In this Letter, we perform three-dimensional numerical simulations and radiative transfer modeling exploring the possibility that two giant planets interacting with the disc and orbiting in resonant locking can be responsible for the origin of the observed dust inner rings structure. We find that in this configuration the dust structure is actually long lived while the gas mass of the disc is accreted onto the star and the giant planets, emptying the inner region. In addition, we also find that the innermost planet is located at the inner edge of the dust ring, and can accrete mass from the disc, generating a signature in the dust ring shape that can be observed in mm ALMA observations.
description: 8 pages, 5 figures, accepted Apj Letters
- A Impermanência em Nietzsche -
Creators: name: Táriq Borges Godinho
Publisher: name: Zenodo
Year: 2020
Subjects: Impermanência
Lógica
Linguagem
Pensamento
Princípio
Identidade
Diacrônica
Igualdade
Indiscerníveis
Conceito
Categoria
Mundo

description: My Graduation Monographic Thesis based mostly on Friedrich Wilhelm Nietzsche's Philosophy.
Magnetic Rayleigh-Taylor instability for Pulsar Wind Nebulae in expanding Supernova Remnants
Creators: name: Bucciantini, N.
name: Amato, E.
name: Bandiera, R.
name: Blondin, J. M.
name: Del Zanna, L.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a numerical investigation of the development of Rayleigh-Taylor instability at the interface between an expanding Pulsar Wind Nebula and its surrounding Supernova Remnant. These systems have long been thought to be naturally subject to this kind of instability, given their expansion behavior and the density jump at the contact discontinuity. High resolution images of the Crab Nebula at optical frequencies show the presence of a complex network of line-emitting filaments protruding inside the synchrotron nebula. These structures are interpreted as the observational evidence that Rayleigh-Taylor instability is in fact at work. The development of this instability in the regime appropriate to describe Supernova Remnant-Pulsar Wind Nebula systems is non-trivial. The conditions at the interface are likely close to the stability threshold, and the inclusion of the nebular magnetic field, which might play an important role in stabilizing the system, is essential to the modeling. If Rayleigh-Taylor features can grow efficiently a mixing layer in the outer portion of the nebula might form where most of the supernova material is confined. When a magnetic field close to equipartition is included we find that the interface is stable, and that even a weaker magnetic field affects substantially the growth and shape of the fingers.
description: 14 pages, 6 figures, accepted for publication in A&A
Additional file 1 of The influence of care home managers on the implementation of a complex intervention: findings from the process evaluation of a randomised controlled trial of dementia care mapping
Creators: name: Kelley, R.
name: A. W. Griffiths
name: E. Shoesmith
name: J. McDermid
name: E. Couch
name: O. Robinson
name: D. Perfect
name: C. A. Surr
Publisher: name: figshare
Year: 2020
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1. Example interview topic guide
Additional file 1 of Microglia and macrophage exhibit attenuated inflammatory response and ferroptosis resistance after RSL3 stimulation via increasing Nrf2 expression
Creators: name: Cui, Yu
name: Zhang, Zhaolong
name: Zhou, Xin
name: Zhao, Zhiyuan
name: Zhao, Rui
name: Xu, Xiangyu
name: Kong, Xiangyi
name: Ren, Jinyang
name: Yao, Xujin
name: Wen, Qian
name: Guo, Feifei
name: Gao, Shengli
name: Sun, Jiangdong
name: Wan, Qi
Publisher: name: figshare
Year: 2021
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Table 1. Primers for qRT-PCR analysis. Table 2. Primers for CHIP-qRT-PCR analysis [1]. Supplementary Figure legends
Superconductivity and charge density wave under a time-dependent periodic field in the one-dimensional attractive Hubbard model
Creators: name: Fujiuchi, Ryo
name: Kaneko, Tatsuya
name: Sugimoto, Koudai
name: Yunoki, Seiji
name: Ohta, Yukinori
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the competition between superconductivity (SC) and charge density wave (CDW) under a time-dependent periodic field in the attractive Hubbard model. By employing the time-dependent exact diagonalization method, we show that the driving frequency and amplitude of the external field can control the enhancement of either the superconducting pair or the CDW correlations, which are degenerate in the ground state of the half-filled attractive Hubbard model in the absence of the field. In the strong-coupling limit of the attractive Hubbard interaction, the controllability is characterized by the anisotropic interaction of the effective model. The anisotropy is induced by the external field and lifts the degeneracy of SC and CDW. We find that the enhancement or suppression of the superconducting pair and CDW correlations in the periodically-driven attractive Hubbard model can be well interpreted by the quench dynamics of the effective model derived in the strong-coupling limit.
description: 8 pages, 7 figures
On the Dynamics of Point Vortices with Positive Intensities collapsing with the boundary
Creators: name: Donati, Martin
name: Godard-Cadillac, Ludovic
name: Iftimie, Dragos
Publisher: name: arXiv
Year: 2024
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 76B47, 34A34

description: In this paper, we study the point-vortex dynamics with positive intensities. We show that in the half-plane and in a disk, collapses of point vortices with the boundary in finite time are impossible, hence the solution of the dynamics is global in time. We also give some necessary conditions for the existence of collapses with the boundary in general smooth bounded domains, in particular, that the trajectory of at least one point vortex has no limit. Some minor results are obtained with unsigned intensities.
On irreducibility of tensor products of evaluation modules for the quantum affine algebra
Creators: name: Molev, A. I.
name: Tolstoy, V. N.
name: Zhang, R. B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: Every irreducible finite-dimensional representation of the quantized enveloping algebra U_q(gl_n) can be extended to the corresponding quantum affine algebra via the evaluation homomorphism. We give in explicit form the necessary and sufficient conditions for irreducibility of tensor products of such evaluation modules.
description: 22 pages. Some references are added