cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Regularity of projection operators attached to worm domains
Creators: name: Barrett, David
name: Ehsani, Dariush
name: Peloso, Marco
Publisher: name: arXiv
Year: 2014
Subjects: subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 32A25, 35B65, 32T20

description: We construct a projection operator on an unbounded worm domain which maps subspaces of $W^s$ to themselves. The subspaces are determined by a Fourier decomposition of $W^s$ according to a rotational invariance of the worm domain.
description: final version
Contract, Labour Law and Reality in the High Court of Australia
Creators: name: Schofield-Georgeson, Eugene
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 480104
subject: Labour law
classificationCode: 480601
subject: Contract law

description: The recent turn towards legal formalism and the common law of contract in the High Court of Australia’s landmark redefinition of the employment relationship in Construction, Forestry, Maritime, Mining and Energy Union v Personnel Contracting Pty Ltd and ZG Operations Australia Pty Ltd v Jamsek (a companion appeal), has concerning ramifications for workers. This article explains this decision through critical contract theory, contextualising it as the latest edition to a series of cases that have applied formalist legal reasoning to redefine key areas within Australian labour law including: implied terms; adverse action; prohibited matters; and industrial action. It argues that eclipsing the reality of work with the ‘form’ of an employer’s contract or other narrow, individualistic forms of reasoning, undermines the protective purposes of labour law, enhancing employer power while marginalising workers. The paper concludes with an analysis of proposals — mostly legislative in nature — to stem the destructive influence of formalism and the law of contract upon labour law.
Visualizing operators of coupled spin systems
Creators: name: Garon, Ariane
name: Zeier, Robert
name: Glaser, Steffen J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The state of quantum systems, their energetics, and their time evolution is modeled by abstract operators. How can one visualize such operators for coupled spin systems? A general approach is presented which consists of several shapes representing linear combinations of spherical harmonics. It is applicable to an arbitrary number of spins and can be interpreted as a generalization of Wigner functions. The corresponding visualization transforms naturally under non-selective spin rotations as well as spin permutations. Examples and applications are illustrated for the case of three spins 1/2.
description: 27 pages, 12 figures, 10 tables; v2: extended the discussion of Wigner functions, the motivation, and the comparison to other work
On possible origins of trends in financial market price changes
Creators: name: Murakami, Ryo
name: Nakamura, Tomomichi
name: Kimura, Shin
name: Manabe, Masashi
name: Tanizawa, Toshihiro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Trading and Market Microstructure (q-fin.TR)
subject: General Finance (q-fin.GN)
subject: FOS: Economics and business

description: We investigate possible origins of trends using a deterministic threshold model, where we refer to long-term variabilities of price changes (price movements) in financial markets as trends. From the investigation we find two phenomena. One is that the trend of monotonic increase and decrease can be generated by dealers' minuscule change in mood, which corresponds to the possible fundamentals. The other is that the emergence of trends is all but inevitable in the realistic situation because of the fact that dealers cannot always obtain accurate information about deals, even if there is no influence from fundamentals and technical analyses.
description: 23 pages, 9 figures
Particular Solutions in Bimetric Theory and Their Implications
Creators: name: Hassan, S. F.
name: Schmidt-May, Angnis
name: von Strauss, Mikael
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Ghost-free bimetric theory can describe gravity in the presence of an extra spin-2 field. We study certain aspects of dynamics in this theory: (1) It is shown that if either of the metrics is an Einstein solution then the other is always forced to be Einstein, too. For a class of bimetric models this constraint is stronger and as soon as one metric is Einstein, the other metric is forced to be proportional to it. As a consequence, the models in this class avoid a branch of pathological solutions that exhibit determinant singularities or nonlinear ghosts. These constraints persists in a generalized form when sources are included, but are destroyed in the massive gravity limit of the theory. (2) For another class of bimetric models, we show the existence of solutions that do not admit a massive gravity limit. A bimetric model that could exhibit a nonlinear version of "partially massless" symmetry belongs to both these classes. It is argued that if such a model exits, its symmetry will not survive in the massive gravity limit.
description: Latex, 18 pages. Published version
Foreign Trade of the United States, Annual, 1790-1929: Dairy Cattle and Dairy Products
Creators: name: Gries, Caroline G.
name: Gries, Caroline G.
Publisher: name: Unknown
Year: 1929
Subjects: International Relations/Trade

description: Contents: Analysis of Foreign Trade; Explanation of Terms; Sources; Fig. 1. Butter: Excess of exports or imports annually, 1851-1929; Fig. II. Cheese: Excess of exports or imports annually, 1851-1929; Foreign Trade - Annual exports, imports, reexports and net balance, quantity and value; Table 1. Dairy cattle, inspected: Imports, 1926 and 1929; Table 2. Butter, 1790-1929; Table 3. Cheese, 1790-1929; Table 4. Milk, condensed, 1871-1929; Table 5. Milk: Evaporated, 1920-1929, Powdered, 1920-1929, Cream powder, 1924-1929, Infants food, malted milk, etc., 1918-1929; Table 6. Milk, fresh, 1869-1929; Table 7. Cream, fresh, 1910-1929; Table 8. Total dairy products, 1790-1929; Table 9. Casein and lactarene, 1904-1929; Shipments of dairy products from the United States to Alaska, Hawaii and Porto Rico, 1903-1929: Table 10. Alaska, 1903-1929; Table 11. Hawaii, 1903-1929; Table 12. Porto Rico, 1903-1929.
Analysis and Design of Optimization Algorithms via Integral Quadratic Constraints
Creators: name: Lessard, Laurent
name: Recht, Benjamin
name: Packard, Andrew
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This manuscript develops a new framework to analyze and design iterative optimization algorithms built on the notion of Integral Quadratic Constraints (IQC) from robust control theory. IQCs provide sufficient conditions for the stability of complicated interconnected systems, and these conditions can be checked by semidefinite programming. We discuss how to adapt IQC theory to study optimization algorithms, proving new inequalities about convex functions and providing a version of IQC theory adapted for use by optimization researchers. Using these inequalities, we derive numerical upper bounds on convergence rates for the gradient method, the heavy-ball method, Nesterov's accelerated method, and related variants by solving small, simple semidefinite programming problems. We also briefly show how these techniques can be used to search for optimization algorithms with desired performance characteristics, establishing a new methodology for algorithm design.
description: The previous version of this paper quoted the wrong rate of Nesterov's optimal method when applied to strongly convex functions. With this correction, our bounds are now slightly better than those previously derived for Nesterov's method
Foreign Trade of the United States, Annual, 1790-1929: Hogs, Pork and Pork Products
Creators: name: Gries, Caroline G.
name: Gries, Caroline G.
Publisher: name: Unknown
Year: 1929
Subjects: International Relations/Trade

description: Contents: Analysis of Foreign Trade; Explanation of Terms; Sources; Fig. I. Net imports of total pork and pork products, bacon and hams, lard, salted and pickled pork, 1854-1929; Foreign Trade - Annual exports, imports, reexports and net balance, quantity and value, 1790-1929; Table 1. Hogs, live: Number, 1790-1929; Table 2. Hogs: Shipments from the United States to Alaska, Hawaii, and Porto Rico, 1903-1929; Table 3. Hogs, inspected: Imports, quarantined and not quarantined, 1891-1929; Table 4. Hogs, live: Imports, inspected and classified according to purpose for which imported, 1928 and 1929; Table 5. Bacon, hams and shoulders, Wiltshire and Cumberland sides, 1790-1929; Table 6. Pork, canned, 1900-1929; Table 7. Pork, fresh, 1872-1929; Table 8. Pork, salted and other cured, 1790-1929; Table 9. Lard and neutral lard, 1790-1929; Table 10. Lard oil, 1855-1929; Table 11. Total pork and pork products, 1790-1929; Table 12. Lard compounds, 1893-1929; Table 13. Sausage, 1869-1929; Table 14. Sausage casings, 1869-1929; Shipments of pork and pork products from the United States to Alaska, Hawaii and Porto Rico: Table 15. Alaska, 1903-1929, Table 16. Hawaii, 1903-1929.Table 17. Porto Rico, 1903-1929
The Chaotic Regime of D-Term Inflation
Creators: name: Buchmuller, W.
name: Domcke, V.
name: Schmitz, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider D-term inflation for small couplings of the inflaton to matter fields. Standard hybrid inflation then ends at a critical value of the inflaton field that exceeds the Planck mass. During the subsequent waterfall transition the inflaton continues its slow-roll motion, whereas the waterfall field rapidly grows by quantum fluctuations. Beyond the decoherence time, the waterfall field becomes classical and approaches a time-dependent minimum, which is determined by the value of the inflaton field and the self-interaction of the waterfall field. During the final stage of inflation, the effective inflaton potential is essentially quadratic, which leads to the standard predictions of chaotic inflation. The model illustrates how the decay of a false vacuum of GUT-scale energy density can end in a period of `chaotic inflation'.
description: 15 pages, 6 figures. v3: matches version published in JCAP
Metadata in the Research Workflow: Tools for Enrichment and Validation of Structured Metadata
Creators: name: Pirogov, Anton
name: D'Mello, Fiona
name: Hofmann, Volker
name: Sandfeld, Stefan
Publisher: name: Zenodo
Year: 2022
Subjects: metadata
validation
jsonschema
yaml

description: Improving research data management practices is both an organizational and a technical challenge: even in the same research field, (meta)data is often created, stored and processed in an ad-hoc manner. This results in a lack of a clear structure and standardization and makes the metadata “unFAIR”. We present two tools that assist scientists in their research workflows to enrich, structure and validate their data and metadata. This increases machine interpretability and reusability, e.g. to ease (automatic) data analysis or metadata harvesting pipelines. Metador is a web-based structured submission interface for uploading research data and linking it to predefined metadata in a structured form. Metadata is supplied by completing a form for each uploaded file. The form is configurable by JSON Schemas and can adjusted by the user depending on the type of the uploaded file. This ensures that captured metadata is specific to the uploaded file type and appropriate to the scientific domain. It is intended for deployment in research groups and designed for quick and easy integration into existing scientific workflows.
 Currently we are extending Metador architecture and functionality into a versatile RDM platform focused on metadata standardization and harmonization. It will be designed as an open and extensible ecosystem of reusable generic building blocks and ready-to-deploy services. Combined, they will cover aspects from initial collection of metadata up to improved search, data extraction and data visualization. DirSchema is a specification and validation tool that enforces requirements concerning the directory structure and metadata provided in datasets. It is intended to be used by researchers and research groups during dataset generation or preparation to harmonize metadata in datasets across users and groups. DirSchema can be used by individual researchers or research groups to validate their dataset directory structures against an agreed-upon JSON Schema based specification that is provided as a YAML file. Further it can be deployed as a building block in other local or web-based scenarios to perform the validation automatically.
description: {"references": ["DirSchema Repository: https://github.com/Materials-Data-Science-and-Informatics/dirschema", "Metador Repository: https://github.com/Materials-Data-Science-and-Informatics/metador"]}
title: Das Inklusionspotenzial der Jobgarantie MAGMA
Creators: name: Oberhofer, Fabian
Year: 2021

description: Vor dem Hintergrund einer sich verfestigenden Arbeitslosigkeit, nimmt die Zahl an arbeitsmarktfernen Personen stetig zu. Dadurch bleiben sie nicht nur von Erwerbsarbeit ausgeschlossen, sondern auch von der gesellschaftlichen Teilhabe und sozialer Anerkennung. Betroffene müssen daher wieder in die gesellschaftliche Arbeitsteilung integriert werden, was durch die Jobgarantie MAGMA versprochen wird. Der Zugang zur Beschäftigung bindet zwar formal ein, jedoch führt dies nicht zwangsläufig zu einer subjektiv wahrgenommen Inklusion. Deshalb wurde in der vorliegenden Arbeit das Inklusionspotenzial der Jobgarantie MAGMA untersucht, indem mittels einem Mixed Method Design der Transformationsprozess der Teilnehmer*innen nachgezeichnet wurde. Es hat sich ein Wandel von einem benachteiligten Status hin zu einem eingebundenen abgebildet. Dabei haben sich durch den Eintritt in die Jobgarantie drei unterschiedliche Formen der subjektiven Inklusion gezeigt, wobei sich ein ambivalentes Verhältnis zwischen der formalen Einbindung in die geförderte Beschäftigung, und dem subjektiven Inklusionsempfinden der Institution Jobgarantie erkennen lässt. Vor allem ein in der Selbstwahrnehmung zugeschriebener Sonderstatus kann hier das Inklusionspotenzial stark beeinflussen. Durch die Berücksichtigung des subjektiven Inklusionsempfindens kann daher ein vertieftes Verständnis über das Inklusionspotenzial der Jobgarantie erreicht werden.
Two-loop QCD corrections to the MSSM Higgs masses beyond the effective-potential approximation
Creators: name: Degrassi, G.
name: Di Vita, S.
name: Slavich, P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the two-loop QCD corrections to the neutral Higgs-boson masses in the MSSM, including the effect of non-vanishing external momenta in the self-energies. We obtain corrections of O(alpha_t*alpha_s) and O(alpha*alpha_s), i.e., all two-loop corrections that involve the strong gauge coupling when the only non-vanishing Yukawa coupling is the top one. We adopt either the DRbar renormalization scheme or a mixed OS-DRbar scheme where the top/stop parameters are renormalized on-shell. We compare our results with those of earlier calculations, pointing out an inconsistency in a recent result obtained in the mixed OS-DRbar scheme. The numerical impact of the new corrections on the prediction for the lightest-scalar mass is moderate, but already comparable to the accuracy of the Higgs-mass measurement at the LHC.
description: 22 pages, 5 pdf figures; v2: version to appear in EPJC
Observation of generalized optomechanical coupling and cooling on cavity resonance
Creators: name: Sawadsky, Andreas
name: Kaufer, Henning
name: Nia, Ramon Moghadas
name: Tarabrin, Sergey P.
name: Khalili, Farid Ya.
name: Hammerer, Klemens
name: Schnabel, Roman
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Optomechanical coupling between a light field and the motion of a cavity mirror via radiation pressure plays an important role for the exploration of macroscopic quantum physics and for the detection of gravitational waves (GWs). It has been used to cool mechanical oscillators into their quantum ground states and has been considered to boost the sensitivity of GW detectors, e.g. via the optical spring effect. Here, we present the experimental characterization of generalized, that is, dispersive and dissipative optomechanical coupling, with a macroscopic (1.5mm)^2-sized silicon nitride (SiN) membrane in a cavity-enhanced Michelson-type interferometer. We report for the first time strong optomechanical cooling based on dissipative coupling, even on cavity resonance, in excellent agreement with theory. Our result will allow for new experimental regimes in macroscopic quantum physics and GW detection.
Construction of real-valued localized composite Wannier functions for insulators
Creators: name: Fiorenza, Domenico
name: Monaco, Domenico
name: Panati, Gianluca
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences
subject: 81Q70, 35J10

description: We consider a real periodic Schrödinger operator and a physically relevant family of $m \geq 1$ Bloch bands, separated by a gap from the rest of the spectrum, and we investigate the localization properties of the corresponding composite Wannier functions. To this aim, we show that in dimension $d \leq 3$ there exists a global frame consisting of smooth quasi-Bloch functions which are both periodic and time-reversal symmetric. Aiming to applications in computational physics, we provide a constructive algorithm to obtain such a Bloch frame. The construction yields the existence of a basis of composite Wannier functions which are real-valued and almost-exponentially localized. The proof of the main result exploits only the fundamental symmetries of the projector on the relevant bands, allowing applications, beyond the model specified above, to a broad range of gapped periodic quantum systems with a time-reversal symmetry of bosonic type.
description: 40 pages, 3 figures. Minor corrections implemented, some references added. To appear in Annales Henri Poicar\'e
Differentiability of Palmer's linearization Theorem and converse result for density functions
Creators: name: Castañeda, Alvaro
name: Robledo, Gonzalo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34A34, 34D20, 34D23

description: We study differentiability properties in a particular case of the Palmer's linearization Theorem, which states the existence of an homeomorphism $H$ between the solutions of a linear ODE system having exponential dichotomy and a quasilinear system. Indeed, if the linear system is uniformly asymptotically stable, sufficient conditions ensuring that $H$ is a $C^{2}$ preserving orientation diffeomorphism are given. As an application, we generalize a converse result of density functions for a nonlinear system in the nonautonomous case.
Foreign Trade of the United States, Annual, 1790-1929: Cattle, Beef and Beef Products
Creators: name: Gries, Caroline G.
name: Gries, Caroline G.
Publisher: name: Unknown
Year: 1929
Subjects: International Relations/Trade

description: Contents: Analysis of Foreign Trade; Explanation of Terms; Sources; Fig. 1. Net exports or imports of total fresh, canned and pickled beef, quantity, 1807-1029; Fig. 2. Net exports of oleo oil, quantity, 1878-1929; Foreign Trade - Annual exports, imports, reexports and net balance, quantity and value, 1790-1929; Table 1. Cattle, live: Number, 1790-1929; Table 2. Cattle; Shipments from the United States to Alaska, Hawaii and Porto Rico, 1903-1929; Table 3. Cattle, inspected: Imports, quarantined and not quarantined, 1891-1929; Table 4. Cattle, live: Imports, inspected and classified according to purpose for which imported, 1928 and 1929; Table 5. Beef, canned, 1864-1929; Table 6. Beef and veal, fresh, 1872-1929; Table 7. Beef, salted, pickled and other cured, 1790-1929; Table 8. Oleo oil, 1876-1929; Table 9. Tallow, 1790-1929; Table 10. Total beef and beef products, 1790-1929; Table 11. Oleomargarine, 1882-1929; Table 12. Oleo stock, 1922-1929; Table 13. Stearin, 1864-1929; Table 14. Sausage, 1869-1929; Table 15. Sausage casing, 1869-1929; Beef and Beef products, shipments from the United States to Alaska, Hawaii and Porto Rico: Table 16. Alaska, 1903-1929; Table 17. Hawaii, 1903-1929; Table 18. Porto Rico, 1903-1929.
Great Britain Historical Database: Digital Boundaries for Registration Districts of England and Wales, 1851-1911
Creators: name: Southall, H. R.
name: Burton, N.
name: Gregory, I.
name: Aucott, P.
Publisher: name: UK Data Service
Year: 2023

description:
These digital boundaries were created by the Great Britain Historical GIS Project and form part of the Great Britain Historical Database, which contains a wide range of geographically-located statistics, selected to trace the emergence of the north-south divide in Britain and to provide a synoptic view of the human geography of Britain, generally at sub-county scales.

They represent the boundaries of Registration Districts in England and Wales as in use at the date of each Census of Population between 1851 and 1911, 1911 being the last census to report extensively on these units.
European Association for South Asian Archaeology and Art, 24th Conference
Creators: name: Filigenzi, Anna
name: Bakker, H. T.
name: de Simone, Daniela
Publisher: name: Zenodo
Year: 2018
Subjects: EASAA

description: European Association for South Asian Archaeology and Art, 24th Conference, 02 July-06 July 2018, Naples, Italy.
title: Die Darstellung von Ereignissen der Französischen Revolution von 1789 bis 1794 in ausgewählter fachwissenschaftlicher Literatur im Vergleich
Creators: name: König, Alexander
Year: 2021

description: Bei einem so viel diskutierten Ereignis wie der Französischen Revolution ist es klar, dass viele Meinungen und Positionen dazu existieren. Allerdings stellt sich die Frage, ob bestimmte Richtungen und Interpretationen auch in aktuellen deutschen Werken erkennbar sind oder wodurch sich diese unterscheiden. Es könnte sein, dass offenkundige Positionen vermieden und stattdessen subtiler verpackt werden, indem Ereignisse besonders ausgeschmückt oder verkürzt dargestellt werden. Dieser Frage geht diese Arbeit nach, indem sie bedeutende Ereignisse aus dem Zeitraum 1789 bis 1794 gegenüberstellt und analysiert. Dabei wird die Qualitative Inhaltsanalyse nach Philipp Mayring verwendet, um diese Frage beantworten zu können. Die Arbeit zeigt zwar, dass sich eine genauere Analyse lohnt, allerdings lässt sich die ausgewählte Literatur keiner bestimmten politischen Richtung zuordnen. Es zeigt sich aber anhand einiger Beispiele, wie wichtig ein Studium mehrerer Quellen ist, um einen genauen Überblick über ein historisches Ereignis zu bekommen. Dieser Aspekt ist vor allem für einen guten Geschichtsunterricht zu beachten.
The Grism Lens-Amplified Survey from Space (GLASS). II. Gas-phase metallicity and radial gradients in an interacting system at z~2
Creators: name: Jones, Tucker
name: Wang, Xin
name: Schmidt, Kasper
name: Treu, Tommaso
name: Brammer, Gabriel
name: Bradac, Marusa
name: Dressler, Alan
name: Henry, Alaina
name: Malkan, Matthew
name: Pentericci, Laura
name: Trenti, Michele
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present spatially resolved gas-phase metallicity for a system of three galaxies at z=1.85 detected in the Grism Lens-Amplified Survey from Space (GLASS). The combination of HST's diffraction limit and strong gravitational lensing by the cluster MACS J0717+3745 results in a spatial resolution of ~200-300 pc, enabling good spatial sampling despite the intrinsically small galaxy sizes. The galaxies in this system are separated by 50-200 kpc in projection and are likely in an early stage of interaction, evidenced by relatively high specific star formation rates. Their gas-phase metallicities are consistent with larger samples at similar redshift, star formation rate, and stellar mass. We obtain a precise measurement of the metallicity gradient for one galaxy and find a shallow slope compared to isolated galaxies at high redshift, consistent with a flattening of the gradient due to gravitational interaction. An alternative explanation for the shallow metallicity gradient and elevated star formation rate is rapid recycling of metal-enriched gas, but we find no evidence for enhanced gas-phase metallicities which should result from this effect. Notably, the measured stellar masses log(M/Msun) = 7.2-9.1 probe to an order of magnitude below previous mass-metallicity studies at this redshift. The lowest mass galaxy has properties similar to those expected for Fornax at this redshift, indicating that GLASS is able to directly study the progenitors of local group dwarf galaxies on spatially resolved scales. Larger samples from the full GLASS survey will be ideal for studying the effects of feedback, and the time evolution of metallicity gradients. These initial results demonstrate the utility of HST spectroscopy combined with gravitational lensing for characterizing resolved physical properties of galaxies at high redshift.
description: AJ in press. The GLASS website is at http://glass.physics.ucsb.edu
Modeling Klein tunneling and caustics of electron waves in graphene
Creators: name: Logemann, R.
name: Reijnders, K. J. A.
name: Tudorovskiy, T.
name: Katsnelson, M. I.
name: Yuan, Shengjun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We employ the tight-binding propagation method to study Klein tunneling and quantum interference in large graphene systems. With this efficient numerical scheme, we model the propagation of a wave packet through a potential barrier and determine the tunneling probability for different incidence angles. We consider both sharp and smooth potential barriers in n-p-n and n-n' junctions and find good agreement with analytical and semiclassical predictions. When we go outside the Dirac regime, we observe that sharp n-p junctions no longer show Klein tunneling because of intervalley scattering. However, this effect can be suppressed by considering a smooth potential. Klein tunneling holds for potentials changing on the scale much larger than the interatomic distance. When the energies of both the electrons and holes are above the Van Hove singularity, we observe total reflection for both sharp and smooth potential barriers. Furthermore, we consider caustic formation by a two-dimensional Gaussian potential. For sufficiently broad potentials we find a good agreement between the simulated wave density and the classical electron trajectories.
description: 14 pages, 12 figures
Treatment of $N$-dimensional Schrödinger equation for anharmonic potential via Laplace transform
Creators: name: Das, Tapas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: First time anharmonic potential $V(r)=ar^2+br-\frac{c}{r} \,,(a>0) $ is examined for $N$-dimensional Schrödinger equation via Laplace transformation method. In transformed space, the behavior of the Laplace transform at the singular point of the differential equation is used to study the eigenfunctions and the energy eigenvalues.The results are easy to derive and identical with those obtained by other methods.
description: Nine pages, No figure
Majorana vortex-bound states in three-dimensional nodal noncentrosymmetric superconductors
Creators: name: Chang, Po-Yao
name: Matsuura, Shunji
name: Schnyder, Andreas P.
name: Ryu, Shinsei
Publisher: name: arXiv
Year: 2014
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: Noncentrosymmetric superconductors (NCSs), characterized by antisymmetric spin-orbit coupling and a mixture of spin-singlet and spin-triplet pairing components, are promising candidate materials for topological superconductivity. An important hallmark of topological superconductors is the existence of protected zero-energy states at surfaces or in vortex cores. Here we investigate Majorana vortex-bound states in three-dimensional nodal and fully gapped NCSs by combining analytical solutions of Bogoliubov-de Gennes (BdG) equations in the continuum with exact diagonalization of BdG Hamiltonians. We show that depending on the crystal point-group symmetries and the topological properties of the bulk Bogoliubov-quasiparticle wave functions, different types of zero-energy Majorana modes can appear inside the vortex core. We find that for nodal NCSs with tetragonal point group $C_{4v}$ the vortex states are dispersionless along the vortex line, forming one-dimensional Majorana flat bands, while for NCSs with $D_{4}$ point-group symmetry the vortex modes are helical Majorana states with a linear dispersion along the vortex line. NCSs with monoclinic point group $C_2$, on the other hand, do not exhibit any zero-energy vortex-bound states. We show that in the case of the $C_{4v}$ ($D_4$) point group the stability of these Majorana zero modes is guaranteed by a combination of reflection ($π$ rotation), time-reversal, and particle-hole symmetry. Considering continuous deformations of the quasiparticle spectrum in the presence of vortices, we show that the flat-band vortex-bound states of $C_{4v}$ point-group NCSs can be adiabatically connected to the dispersionless vortex-bound states of time-reversal symmetric Weyl superconductors. Experimental implications of our results for thermal transport and tunneling measurements are discussed.
description: 10 pages, 5 figures, published version
Reconstructing function fields from rational quotients of mod-$\ell$ Galois groups
Creators: name: Topaz, Adam
Publisher: name: arXiv
Year: 2014
Subjects: subject: Algebraic Geometry (math.AG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 12F10, 12G05, 12J10, 19D45

description: In this paper, we develop the main step in the global theory for the mod-$\ell$ analogue of Bogomolov's program in birational anabelian geometry for higher-dimensional function fields over algebraically closed fields. More precisely, we show how to reconstruct a function field $K$ of transcendence degree $\geq 5$ over an algebraically closed field, up-to inseparable extensions, from the mod-$\ell$ abelian-by-central Galois group of $K$ endowed with the collection of mod-$\ell$ rational quotients.
description: V3: 42 pages; Final version; purely expository changes; numbering changed in section 8. Will appear in Math. Annalen
Extended linear regime of cavity-QED enhanced optical circular birefringence induced by a charged quantum dot
Creators: name: Hu, C. Y.
name: Rarity, J. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Giant optical Faraday rotation (GFR) and giant optical circular birefringence (GCB) induced by a single quantum-dot spin in an optical microcavity can be regarded as linear effects in the weak-excitation approximation if the input field lies in the low-power limit [Hu et al, Phys.Rev. B {\bf 78}, 085307(2008) and ibid {\bf 80}, 205326(2009)]. In this work, we investigate the transition from the weak-excitation approximation moving into the saturation regime comparing a semiclassical approximation with the numerical results from a quantum optics toolbox [S.M. Tan, J. Opt. B {\bf 1}, 424 (1999)]. We find that the GFR and GCB around the cavity resonance in the strong coupling regime are input-field independent at intermediate powers and can be well described by the semiclassical approximation. Those associated with the dressed state resonances in the strong coupling regime or merging with the cavity resonance in the Purcell regime are sensitive to input field at intermediate powers, and cannot be well described by the semiclassical approximation due to the quantum dot saturation. As the GFR and GCB around the cavity resonance are relatively immune to the saturation effects, the rapid read out of single electron spins can be carried out with coherent state and other statistically fluctuating light fields. This also shows that high speed quantum entangling gates, robust against input power variations, can be built exploiting these linear effects.
description: Section IV has been added to show the linear GFR/GCB is not affected by high-order dressed state resonances in reflection/transmission spectra. 11 pages, 9 figures
Demonstrating Continuous Variable EPR Steering in spite of Finite Experimental Capabilities using Fano Steering Bounds
Creators: name: Schneeloch, James
name: Knarr, Samuel H.
name: Howland, Gregory A.
name: Howell, John C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We show how one can demonstrate continuous-variable Einstein-Podolsky-Rosen (EPR) steering without needing to characterize entire measurement probability distributions. To do this, we develop a modified Fano inequality useful for discrete measurements of continuous variables, and use it to bound the conditional uncertainties in continuous-variable entropic EPR-steering inequalities. With these bounds, we show how one can hedge against experimental limitations including a finite detector size, dead space between pixels, and any such factors that impose an incomplete sampling of the true measurement probability distribution. Furthermore, we use experimental data from the position and momentum statistics of entangled photon pairs in parametric downconversion to show that this method is sufficiently sensitive for practical use.
description: 7 pages, 2 figures
TALENT: System improvement and evaluation report
Creators: name: ITI
Publisher: name: Zenodo
Year: 2020
Subjects: TALENT
2019
3D
industrial inspection
quality control
industry

description: TALENT3 (Research  in automated  inspection for   quality   control   in   the   manufacturing industry) is a project funded by the Valencian Institute for Business Competitiveness (IVACE) and the European Union through the European Regional Development Fund (FEDER).
The  general  objective  of  this  project  is  to advance  in  the  design,  implementation  and industrialization of contact-free and occlusions-free automated inspection systems, introducing   Machine   Learning   techniques. This  will  enable  companies  of  the Valencia Region to increase product quality guarantees and thus strengthen their market position.
This document corresponds to a software system improvements results report after the R+D focused in several tasks of special interest.
description: TALENT. Project funded by the Valencian Institute of Business Competitiveness (IVACE) and European Union through the European Regional Development Fund (ERDF), within the public grant program adressed to Technological Institutes of the Valencian Community for the development of non-economic R&D projects carried out in cooperation with companies during 2019 with 229.592,30€. File number: IMDEEA/2019/86.
Phylogenomic analysis supports the transfer of 20 pathovars from Xanthomonas campestris into Xanthomonas euvesicatoria
Creators: name: Harrison, Jamie
name: Hussain, Rana
name: Greer, Shannon
name: Aspin, Andrew
name: Grant, Murray
name: Vicente, Joana
name: Studholme, David
Publisher: name: Zenodo
Year: 2023

description: The Gram-negative bacterial genus Xanthomonas includes numerous infra-specific taxa known as pathovars, which are defined primarily on host range and disease symptoms. With the advent of molecular sequence data, many pathovars have been transferred from X. campestris into other Xanthomonas species to better harmonise taxonomy and phylogeny. We performed whole-genome shotgun sequencing on pathotype strains of several X. campestris pathovars. These genomes showed more than 98% average nucleotide identity with the type-strain of X. euvesicatoria and less than 88% with the type-strain of X. campestris. We propose the transfer of these pathovars into X. euvesicatoria and present an emended species description for X. euvesicatoria. We also present genome sequences for several other taxonomically important strains of Xanthomonas spp.
title: Einfluss der Einhaltung von Nachhaltigkeitsstandards auf das am Kapitalmarkt messbare Risiko
Creators: name: Cervantes-Schwartz, Andrea
Year: 2021

description: Das Thema Nachhaltigkeit ist in aller Munde. Immer stärker wird ihr Einfluss auch im finanziellen Sektor. Investoren, Analysten und Bewerter müssen künftig bei ihren Entscheidungen die Nachhaltigkeit auch einbeziehen. Es stellt sich jedoch die Frage, ob dieser Trend aus einer regulatorischen Sicht getrieben wird, oder ob es belegbare, empirische Nachweise dafür gibt, dass eine stärkere Nachhaltigkeit einen Vorteil bei der Investition mit sich bringt. Diese Frage wurde in der vorliegenden Masterarbeit untersucht, indem mittels multipler Regression der Zusammenhang zwischen einem ESG-Rating und den Betafaktor analysiert wurde. Es lässt sich zumindest unter bestimmten Bedingungen ein statistisch signifikanter Zusammenhang zwischen ESG-Rating und Betafaktor nachweisen.
Distribution of Orientation Selectivity in Recurrent Networks of Spiking Neurons with Different Random Topologies
Creators: name: Sadeh, Sadra
name: Rotter, Stefan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences

description: Neurons in the primary visual cortex are more or less selective for the orientation of a light bar used for stimulation. A broad distribution of individual grades of orientation selectivity has in fact been reported in all species. A possible reason for emergence of broad distributions is the recurrent network within which the stimulus is being processed. Here we compute the distribution of orientation selectivity in randomly connected model networks that are equipped with different spatial patterns of connectivity. We show that, for a wide variety of connectivity patterns, a linear theory based on firing rates accurately approximates the outcome of direct numerical simulations of networks of spiking neurons. Distance dependent connectivity in networks with a more biologically realistic structure does not compromise our linear analysis, as long as the linearized dynamics, and hence the uniform asynchronous irregular activity state, remain stable. We conclude that linear mechanisms of stimulus processing are indeed responsible for the emergence of orientation selectivity and its distribution in recurrent networks with functionally heterogeneous synaptic connectivity.
description: 12 figures
Dante's Waterfall
Creators: name: Carone, Christopher D.
name: Erlich, Joshua
name: Sensharma, Anuraag
name: Wang, Zhen
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a hybrid axion-monodromy inflation model motivated by the Dante's Inferno scenario. In Dante's Inferno, a two-field potential features a stable trench along which a linear combination of the two fields slowly rolls, rendering the dynamics essentially identical to that of single-field chaotic inflation. A shift symmetry allows for the Lyth bound to be effectively evaded as in other axion-monodromy models. In our proposal, the potential is concave downward near the origin and the inflaton trajectory is a gradual downward spiral, ending at a point where the trench becomes unstable. There, the fields begin falling rapidly towards the minimum of the potential and inflation terminates as in a hybrid model. We find parameter choices that reproduce observed features of the cosmic microwave background, and discuss our model in light of recent results from the BICEP2 and Planck experiments.
description: 16 pages, 8 eps figures
On a regular charged black hole with a nonlinear electric source
Creators: name: Culetu, Hristu
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A modified version of the Reissner-Nordstrom metric is proposed on the grounds of the nonlinear electrodynamics model. The source of curvature is an anisotropic fluid with $p_{r} = -ρ$ which resembles the Maxwell stress tensor at $r >> q^{2}/2m$, where $q$ and $m$ are the mass and charge of the particle, respectively. We found the black hole horizon entropy obeys the relation $S = |W|/2T = A_{H}/4$, with $W$ the Komar energy and $A_{H}$ the horizon area. The electric field around the source depends not only on its charge but also on its mass. The corresponding electrostatic potential $Φ(r)$ is finite everywhere, vanishes at the origin and at $r = q^{2}/6m$ and is nonzero asymptotically, with $Φ_{\infty} = 3m/2q$.
description: 11 pages, four figures, footnote updated, Int. J. Theor. Phys. (2015), 54: 2855 - 2863
Interpolating solution from AdS$_5$ to hyperscaling violating Lifshitz space-time
Creators: name: Dey, Parijat
name: Roy, Shibaji
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We construct two interpolating solutions in type II string theory which interpolate between an AdS$_5$ in the UV and a hyperscaling violating three (spatial) dimensional Lifshitz space-time in the IR. The first solution is non-supersymmetric and is obtained from a known intersecting non-supersymmetric D3-brane with chargeless D0-brane solution of type IIB string theory, by restricting some parameters characterizing the solution and going to a new coordinate. In the IR the dilaton is non-constant in general and the metric is three (spatial) dimensional hyperscaling violating Lifshitz with dynamical critical exponent $z=(3+3γ)/(3-γ)$ and hyperscaling violation exponent $θ= 12/(3-γ)$, where $γ$ is a real parameter and can take continuous values from $-1$ to $+1$. At the two extreme values, i.e., for $γ= \pm 1$, the dilaton is constant. The second solution is supersymmetric and is obtained from the known F-D2 bound state solution of type IIA string theory by zooming into a particular region of space. In the UV, the proper description is given in a T-dual frame which is AdS$_5$, whereas in the IR, it gives a three dimensional hyperscaling violating Lifshitz with $z=3$ and $θ=2=d-1$.
description: 18 pages, no figures; v2: minor changes, references added; v3: several clarifications and references added
Direct Probe of Topological Order for Cold Atoms
Creators: name: Deng, Dong-Ling
name: Wang, Sheng-Tao
name: Duan, Lu-Ming
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Cold-atom experiments in optical lattices offer a versatile platform to realize various topological quantum phases. A key challenge in those experiments is to unambiguously probe the topological order. We propose a method to directly measure the characteristic topological invariants (order) based on the time-of-flight imaging of cold atoms. The method is generally applicable to detection of topological band insulators in one, two, or three dimensions characterized by integer topological invariants. Using detection of the Chern number for the 2D anomalous quantum Hall states and the Chern-Simons term for the 3D chiral topological insulators as examples, we show that the proposed detection method is practical, robust to typical experimental imperfections such as limited imaging resolution, inhomogeneous trapping potential, and disorder in the system.
description: 10 pages, 5 figures, including Supplemental Material, version accepted by PRA as a Rapid Communication
Mechanics of freely-suspended ultrathin layered materials
Creators: name: Castellanos-Gomez, Andres
name: Singh, Vibhor
name: van der Zant, Herre S. J.
name: Steele, Gary A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The study of atomically thin two-dimensional materials is a young and rapidly growing field. In the past years, a great advance in the study of the remarkable electrical and optical properties of 2D materials fabricated by exfoliation of bulk layered materials has been achieved. Due to the extraordinary mechanical properties of these atomically thin materials, they also hold a great promise for future applications such as flexible electronics. For example, this family of materials can sustain very large deformations without breaking. Due to the combination of small dimensions, high Young's modulus and high crystallinity of 2D materials, they have attracted the attention of the field of nanomechanical systems as high frequency and high quality factor resonators. In this article, we review experiments on static and dynamic response of 2D materials. We provide an overview and comparison of the mechanics of different materials, and highlight the unique properties of these thin crystalline layers. We conclude with an outlook of the mechanics of 2D materials and future research directions such as the coupling of the mechanical deformation to their electronic structure.
description: Review article. 11 figures, 2 tables
Foreign Trade of the United States, Annual, 1790-1929: Wheat and Wheat Products and Rye and Rye Products
Creators: name: Gries, Caroline G.
name: Gries, Caroline G.
Publisher: name: Unknown
Year: 1930
Subjects: International Relations/Trade

description: Contents: Analysis of Foreign Trade; Explanation of Terms; Sources; Fig. I. Net exports or imports of wheat, wheat flour and wheat including flour, quantity, 5- year averages, 1790-1849 and annual 1850 to 1929; Fig. II. Net exports or imports of rye including rye flour, quantity, annual 1870 – 1929; Foreign Trade - Annual exports, imports, reexports and net balance, quantity and value, 1790 – 1929; Wheat and Wheat Products: Table 1. Wheat Grain, 1790 – 1929; Table 2. Wheat Grain: Imports for milling in bond and export, 1920 – 1929; Table 3. Wheat Flour, 1790 – 1929; Table 4. Wheat including Flour in terms of Grain, 1790 – 1929; Table 5. Bread and Biscuit, 1790 to 1929; Table 6. Macaroni and Vermicelli, etc., 1860 to 1929; Table 7. Other Wheat Products for Table Use, 1922 to 1929; Table 8. Bran and Middlings, 1790 to 1929; Table 9. Other Mill Feeds, 1913 to 1929; Shipments of Wheat and Wheat Products from the United States to Alaska, Hawaii and Porto Rico: Table 10. Alaska, 1903 to 1929, Table 11. Hawaii, 1903 to 1929, Table 12. Porto Rico, 1903 to 1929; Rye and Rye Products: Table 13. Rye, 1790 to 1929, Table 14. Rye Flour, 1790 to 1929, Table 15. Rye including flour, 1790 to 1929, Table 16. Shipments to Alaska, Hawaii and Porto Rico, 1903 to 1910.