cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
О новим погледима на македонску књижевнојезичку историју и неким другим питањима
Creators: name: Радић, Првослав
Publisher: name: Zenodo
Year: 1991
Subjects: приказ
Стојан Ристески
македонски књижевни језик

description: Књига др Стојана Ристеског покушај је да се попуни једна знатна празнина у савременој македонској лингвистичкој науци, везана за питања кодификације македонског књижевног језика у послератном периоду. Реч је, наиме, о релативно кратком временском периоду — од првог заседања АСНОМ-а, 2. VIII 1944. године, када је начелно донета одлука о увођењу македонског језика као службеног у Републици Македонији, до коначне кодификације македонског књижевног језика и објављивања прве македонске азбуке, 3. V 1945. године, решењем Народне владе Македоније.
description: Приказ књиге: Д-р СТОЈАН РИСТЕСКИ, Создавањето на современиот македонски литературен јазик, НИО "Студентски збор", Скопје 1988, стр. 1—506.
Entanglement entropy of proton and its relation to thermodynamics entropy
Creators: name: Kutak, Krzysztof
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I discuss the thermodynamics-based derivation of the formula for the entanglement entropy of a system of gluons. The derivation is based on an approach where saturation and the Unruh effect were used to obtain and discuss the entropy of gluons. The formula agrees, in the high-energy limit, up to a numerical factor, with more recent results, where arguments based on the density matrix and bipartition of the proton were used to obtain the formula. I also discuss the relation of entropy as obtained in BFKL in DLL approximation and with the application of the BK equation.
description: 8 pages
Predicting the outcomes of treatment to eradicate the latent reservoir for HIV-1
Creators: name: Hill, Alison L.
name: Rosenbloom, Daniel I. S.
name: Fu, Feng
name: Nowak, Martin A.
name: Siliciano, Robert F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Massive research efforts are now underway to develop a cure for HIV infection, allowing patients to discontinue lifelong combination antiretroviral therapy (ART). New latency-reversing agents (LRAs) may be able to purge the persistent reservoir of latent virus in resting memory CD4+ T cells, but the degree of reservoir reduction needed for cure remains unknown. Here we use a stochastic model of infection dynamics to estimate the efficacy of LRA needed to prevent viral rebound after ART interruption. We incorporate clinical data to estimate population-level parameter distributions and outcomes. Our findings suggest that approximately 2,000-fold reductions are required to permit a majority of patients to interrupt ART for one year without rebound and that rebound may occur suddenly after multiple years. Greater than 10,000-fold reductions may be required to prevent rebound altogether. Our results predict large variation in rebound times following LRA therapy, which will complicate clinical management. This model provides benchmarks for moving LRAs from the lab to the clinic and can aid in the design and interpretation of clinical trials. These results also apply to other interventions to reduce the latent reservoir and can explain the observed return of viremia after months of apparent cure in recent bone marrow transplant recipients and an immediately-treated neonate.
description: 8 pages main text (4 figures). In PNAS Early Edition http://www.pnas.org/content/early/2014/08/05/1406663111. Ancillary files: SI, 24 pages SI (7 figures). File .htm opens a browser-based application to calculate rebound times (see SI). Or, the .cdf file can be run with Mathematica. The most up-to-date version of the code is available at http://www.danielrosenbloom.com/reboundtimes/
Critical dense polymers with Robin boundary conditions, half-integer Kac labels and $\mathbb{Z}_4$ fermions
Creators: name: Pearce, Paul A.
name: Rasmussen, Jorgen
name: Tipunin, Ilya Yu.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: For general Temperley-Lieb loop models, including the logarithmic minimal models ${\cal LM}(p,p')$ with $p,p'$ coprime integers, we construct an infinite family of Robin boundary conditions on the strip as linear combinations of Neumann and Dirichlet boundary conditions. These boundary conditions are Yang-Baxter integrable and allow loop segments to terminate on the boundary. Algebraically, the Robin boundary conditions are described by the one-boundary Temperley-Lieb algebra. Solvable critical dense polymers is the first member ${\cal LM}(1,2)$ of the family of logarithmic minimal models and has loop fugacity $β=0$ and central charge $c=-2$. Specializing to ${\cal LM}(1,2)$ with our Robin boundary conditions, we solve the model exactly on strips of arbitrary finite size $N$ and extract the finite-size conformal corrections using an Euler-Maclaurin formula. The key to the solution is an inversion identity satisfied by the commuting double row transfer matrices. This inversion identity is established directly in the Temperley-Lieb algebra. We classify the eigenvalues of the double row transfer matrices using the physical combinatorics of the patterns of zeros in the complex spectral parameter plane and obtain finitized characters related to spaces of coinvariants of $\mathbb{Z}_4$ fermions. In the continuum scaling limit, the Robin boundary conditions are associated with irreducible Virasoro Verma modules with conformal weights $Δ_{r,s-\frac{1}{2}}=\frac{1}{32}(L^2-4)$ where $L=2s-1-4r$, $r\in\mathbb{Z}$, $s\in\mathbb{N}$. These conformal weights populate a Kac table with half-integer Kac labels. Fusion of the corresponding modules with the generators of the Kac fusion algebra is examined and general fusion rules are proposed.
description: 53 pages, v2: comments and references added
Lifshitz Superfluid Hydrodynamics
Creators: name: Chapman, Shira
name: Hoyos, Carlos
name: Oz, Yaron
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 the first order hydrodynamics of quantum critical points with Lifshitz scaling and a spontaneously broken symmetry. The fluid is described by a combination of two flows, a normal component that carries entropy and a super-flow which has zero viscosity and carries no entropy. We analyze the new transport effects allowed by the lack of boost invariance and constrain them by the local second law of thermodynamics. Imposing time-reversal invariance, we find eight new parity even transport coefficients. The formulation is applicable, in general, to any superfluid/superconductor with an explicit breaking of boost symmetry, in particular to high $T_c$ superconductors. We discuss possible experimental signatures.
description: 18 pages, 1 figure; added comments about time reversal invariance and the choice of time direction; updated referee comments according to published version
Triplet Dark Matter from leptogenesis
Creators: name: Heo, Jae Ho
name: Kim, C. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A triplet dark matter candidate from thermal leptogenesis is considered with building a model. The model is based on the standard two Higgs doublet model and seesaw mechanism with Higgs triplets. The parameters (couplings and masses) are adjusted for the observed small neutrino mass and the leptogenesis. Dark matter particles can annihilate and decay in this model. The time evolution of the dark matter number is governed by (co)annihilations in the expanding universe, and its mass is constrained by the observed relic density. The dark matter can decay into final states with three leptons (two charged leptons and one neutrino). We investigate whether the decay in the galaxy can account for cosmic ray anomalies in the positron and electron spectrum. A noticeable point is that if the dark matter decays into each lepton with different branching ratios, cosmic ray anomalies in AMS-02 measurements of the positron fraction and the Fermi LAT measurements of the electrons-plus-positrons flux could be simultaneously accounted for from its decay products. The leptogenesis within this model is studied in an appendix.
description: 16p.,4 figs, minor corrections
Deep Learning in Neural Networks: An Overview
Creators: name: Schmidhuber, Juergen
Publisher: name: arXiv
Year: 2014
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In recent years, deep artificial neural networks (including recurrent ones) have won numerous contests in pattern recognition and machine learning. This historical survey compactly summarises relevant work, much of it from the previous millennium. Shallow and deep learners are distinguished by the depth of their credit assignment paths, which are chains of possibly learnable, causal links between actions and effects. I review deep supervised learning (also recapitulating the history of backpropagation), unsupervised learning, reinforcement learning & evolutionary computation, and indirect search for short programs encoding deep and large networks.
description: 88 pages, 888 references
Probing the Global Dust Properties and Cluster Formation Potential of the Giant Molecular Cloud G148.24+00.41
Creators: name: Rawat, Vineet
name: Samal, M. R.
name: Walker, D. L.
name: Zavagno, A.
name: Tej, A.
name: Marton, G.
name: Ojha, D. K.
name: Elia, Davide
name: Chen, W. P.
name: Jose, J.
name: Eswaraiah, C
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Clouds more massive than about $10^5$ M$_\odot$ are potential sites of massive cluster formation. Studying the properties of such clouds in the early stages of their evolution offers an opportunity to test various cluster formation processes. We make use of CO, Herschel, and UKIDSS observations to study one such cloud, G148.24+00.41. Our results show the cloud to be of high mass ($\sim$ $1.1\times10^5$ M$_\odot$), low dust temperature ($\sim$ 14.5 K), nearly circular (projected radius $\sim$ 26 pc), and gravitationally bound with a dense gas fraction of $\sim 18$% and a density profile with a power-law index of $\sim -1.5$. Comparing its properties with those of nearby molecular clouds, we find that G148.24+00.41 is comparable to the Orion-A molecular cloud in terms of mass, size, and dense gas fraction. From our analyses, we find that the central area of the cloud is actively forming protostars and is moderately fractal with a Q-value of $\sim$ 0.66. We also find evidence of global mass-segregation in the cloud, with a degree of mass-segregation ($Λ_{MSR}) \approx3.2$. We discuss these results along with the structure and compactness of the cloud, the spatial and temporal distribution of embedded stellar population, and their correlation with the cold dust distribution, in the context of high-mass cluster formation. Comparing our results with models of star cluster formation, we conclude that the cloud has the potential to form a cluster in the mass range $\sim$ 2000--3000 M$_\odot$ through dynamical hierarchical collapse and assembly of both gas and stars.
description: It is accepted for publication in Monthly Notices of the Royal Astronomical Society (MNRAS). The unedited version of the manuscript has been published
Elliptic genera of monopole strings
Creators: name: Bak, Dongsu
name: Gustavsson, Andreas
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We obtain the elliptic genera of monopole strings in 5d MSYM. We find agreement with corresponding TST-dual dyonic-instanton single particle indices in 1110.2175. We make use of (2,2) superconformal algebra and its spectral flow, and the agreement can therefore be taken as evidence that monopole string (4,4) sigma models are exactly quantum superconformal.
description: 1+46 pages. v2: Sections 5 and 6 added. Other parts corrected accordingly. References added
Estadísticas de primer y segundo orden de superficies rugosas aleatorias a partir de imágenes remotas considerando una función de brillo Gaussiana /
Creators: name: Marin Hernandez, Mark
Publisher: name: Universidad Autónoma de Baja California.
Year: 2022
Subjects: subject: GC10.4 .R4 M37 1997

description: El problema de obtener información de las propiedades estadísticas de superficies rugosas aleatorias a partir de imágenes remotas fue resuelto por Alvarez Borrego en 1993.
Testing Isotropy in the Local Universe
Creators: name: Appleby, Stephen
name: Shafieloo, Arman
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We test the isotropy of the local distribution of galaxies using the 2MASS extended source catalogue. By decomposing the full sky survey into distinct patches and using a combination of photometric and spectroscopic redshift data, we use both parametric and non-parametric methods to obtain the shape of the luminosity function in each patch. We use the shape of the luminosity function to test the statistical isotropy of the underlying galaxy distribution. The parametric estimator shows some evidence of a hemispherical asymmetry in the north/south Galactic plane. However the non-parametric estimator exhibits no significant anisotropy, with the galaxy distribution being consistent with the assumption of isotropy in all regions considered. The parametric asymmetry is attributed to the relatively poor fit of the functional form to the underlying data. When using the non-parametric estimator, we do find a dipole in the shape of the luminosity function, with maximal deviation from isotropy at galactic coordinate $(b,l)=(30^{\circ},315^{\circ})$. However we can ascribe no strong statistical significance to this observation.
description: 12 pages, 8 figures, 5 tables. Paper significantly modified, multiple estimators of the LF now used and a new method of selecting maximally anisotropic direction presented and implemented. Matches final version published in JCAP
Mode I&II SIFs for semi-elliptical crack in a cylinder wrapped with a composite layer
Creators: name: Behseresht, Saeed
name: Mehdizadeh, Mehdi
Publisher: name: figshare
Year: 2023
Subjects: Solid mechanics

description: Pressure vessels or specifically speaking thin-walled cylinders (or thick-walled) are among frequently used equipment in a wide range of industries and their analysis in different working conditions is of a great importance. In this study, fracture parameters for a semi-elliptical surface crack in a thin-walled cylinder are investigated using Ansys Workbench commercial software. The distribution of SIF along the crack length is determined for a crack in pure cylinder and the results are verified using ASME Code. Next, wrapping the cylinder with a composite layer, the influence of mechanical properties of composite layer and its thickness on the distribution of mode I & II stress intensity factor (SIF) is investigated. The results reveal that using an orthotropic layer as long as its modulus of elasticity perpendicular to the crack face is greater than pure cylinder’s modulus of elasticity, the SIF declines significantly which is conducive to pressure vessel’s remaining life.
Tropical Feynman integration in the physical region
Creators: name: Borinsky, Michael
name: Munch, Henrik J.
name: Tellander, Felix
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The software feyntrop for direct numerical evaluation of Feynman integrals is presented. We focus on the underlying combinatorics and polytopal geometries facilitating these methods. Especially matroids, generalized permutohedra and normality are discussed in detail.
description: 9 pages, 3 figures, EPS-HEP 2023 proceedings
Robust Weak-lensing Mass Calibration of Planck Galaxy Clusters
Creators: name: von der Linden, Anja
name: Mantz, Adam
name: Allen, Steven W.
name: Applegate, Douglas E.
name: Kelly, Patrick L.
name: Morris, R. Glenn
name: Wright, Adam
name: Allen, Mark T.
name: Burchat, Patricia R.
name: Burke, David L.
name: Donovan, David
name: Ebeling, Harald
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In light of the tension in cosmological constraints reported by the Planck team between their SZ-selected cluster counts and Cosmic Microwave Background (CMB) temperature anisotropies, we compare the Planck cluster mass estimates with robust, weak-lensing mass measurements from the Weighing the Giants (WtG) project. For the 22 clusters in common between the Planck cosmology sample and WtG, we find an overall mass ratio of $\left< M_{Planck}/M_{\rm WtG} \right> = 0.688 \pm 0.072$. Extending the sample to clusters not used in the Planck cosmology analysis yields a consistent value of $\left< M_{Planck}/M_{\rm WtG} \right> = 0.698 \pm 0.062$ from 38 clusters in common. Identifying the weak-lensing masses as proxies for the true cluster mass (on average), these ratios are $\sim 1.6σ$ lower than the default mass bias of 0.8 assumed in the Planck cluster analysis. Adopting the WtG weak-lensing-based mass calibration would substantially reduce the tension found between the Planck cluster count cosmology results and those from CMB temperature anisotropies, thereby dispensing of the need for "new physics" such as uncomfortably large neutrino masses (in the context of the measured Planck temperature anisotropies and other data). We also find modest evidence (at 95 per cent confidence) for a mass dependence of the calibration ratio and discuss its potential origin in light of systematic uncertainties in the temperature calibration of the X-ray measurements used to calibrate the Planck cluster masses. Our results exemplify the critical role that robust absolute mass calibration plays in cluster cosmology, and the invaluable role of accurate weak-lensing mass measurements in this regard.
description: 5 pages, 2 figures
Accurate transport cross sections for the Lennard-Jones potential
Creators: name: Khrapak, Sergey
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Physically motivated expressions for the transport cross sections describing classical scattering in the Lennard-Jones potential are proposed. These expressions, which agree with the numerical results better than to within $\pm 1%$, can be easy implemented in practical situations. Some relevant examples are provided.
description: 6 pages
Topics in minimax shrinkage estimation
Creators: name: Zinonos, Stavros
Publisher: name: No Publisher Supplied
Year: 2018

description: The dissertation considers three different topics which pertain to minimax shrinkage estimation:1) Minimax estimation of a mean vector with variable selection for classes of spherically symmetric distributions: The results of Zhou and Hwang [31] and Maruyama [22] are extended from the normal case with known scale, to scale mixtures of normals and more generally to spherically symmetric distributions with a residual vector. Slight extensions to the class of estimators to which the results pertain are also given.2) Minimax shrinkage estimators of a location vector under concave loss: In particular it is shown for a wide class of concave loss functions, James-Stein and Baranchik-type estimators which dominate the usual" estimator for quadratic loss also dominate for these concave losses. The distributions studied include multivariate normal distributions with covariance equal to a known multiple of the identity, normal distributions with an unknown scale times the identity, and general scale mixtures of multivariate normal distributions with an unknown scale.3) Combining unbiased and possibly biased correlated estimators of a mean vector under general quadratic loss: The general approach is to use a shrinkage-type estimator which shrinks an unbiased estimator toward a biased estimator. Conditions under which the combined estimator dominates the original unbiased estimator are given. Models studied include normal models with a known covariance structure, scale mixtures of normals, and more generally elliptically symmetric models with a known covariance structure. Elliptically symmetric models with a covariance structure known up to a multiple are also considered.
Designing Ocean Vision AI: An Investigation of Community Needs for Imaging-based Ocean Conservation
Creators: name: Crosby, Alison
name: Orenstein, Eric C.
name: Poulton, Susan E.
name: Bell, Katherine L. C.
name: Woodward, Benjamin
name: Ruhl, Henry
name: Katija, Kakani
name: Forbes, Angus G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Ocean scientists studying diverse organisms and phenomena increasingly rely on imaging devices for their research. These scientists have many tools to collect their data, but few resources for automated analysis. In this paper, we report on discussions with diverse stakeholders to identify community needs and develop a set of functional requirements for the ongoing development of ocean science-specific analysis tools. We conducted 36 in-depth interviews with individuals working in the Blue Economy space, revealing four central issues inhibiting the development of effective imaging analysis monitoring tools for marine science. We also identified twelve user archetypes that will engage with these services. Additionally, we held a workshop with 246 participants from 35 countries centered around FathomNet, a web-based open-source annotated image database for marine research. Findings from these discussions are being used to define the feature set and interface design of Ocean Vision AI, a suite of tools and services to advance observational capabilities of life in the ocean.
description: Accepted to ACM CHI 2023
The Complexity of Being Entangled
Creators: name: Baiguera, Stefano
name: Chapman, Shira
name: Policastro, Giuseppe
name: Schwartzman, Tal
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nielsen's approach to quantum state complexity relates the minimal number of quantum gates required to prepare a state to the length of geodesics computed with a certain norm on the manifold of unitary transformations. For a bipartite system, we investigate binding complexity, which corresponds to norms in which gates acting on a single subsystem are free of cost. We reduce the problem to the study of geodesics on the manifold of Schmidt coefficients, equipped with an appropriate metric. Binding complexity is closely related to other quantities such as distributed computing and quantum communication complexity, and has a proposed holographic dual in the context of AdS/CFT. For finite dimensional systems with a Riemannian norm, we find an exact relation between binding complexity and the minimal Rényi entropy. We also find analytic results for the most commonly used non-Riemannian norm (the so-called $F_1$ norm) and provide lower bounds for the associated notion of state complexity ubiquitous in quantum computation and holography. We argue that our results are valid for a large class of penalty factors assigned to generators acting across the subsystems. We demonstrate that our results can be borrowed to study the usual complexity (not-binding) for a single spin for the case of the $F_1$ norm which was previously lacking from the literature. Finally, we derive bounds for multi-partite binding complexities and the related (continuous) circuit complexity where the circuit contains at most $2$-local interactions.
description: 64 pages, 7 figures; v2: journal version on Quantum, minor changes
Dynamical System Analysis for a phantom model
Creators: name: Mahata, Nilanjana
name: Chakraborty, Subenoy
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The paper deals with a dynamical system analysis related to phantom cosmological model . Here gravity is coupled to phantom scalar field having scalar coupling function and a potential. The field equations are reduced to an autonomous dynamical system by a suitable redefinition of the basic variables and assuming some suitable form of the potential function. Finally, critical points are evaluated, their nature have been analyzed and corresponding cosmological scenario has been discussed.
description: 15 pages, 3 figures
Testing the Existence of Event Horizons against Rotating Reflecting Surfaces
Creators: name: de Kleuver, Joost
name: Bronzwaer, Thomas
name: Falcke, Heino
name: Narayan, Ramesh
name: Mizuno, Yosuke
name: Porth, Oliver
name: Olivares, Hector
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Recently the Event Horizon Telescope observed black holes at event horizon scales for the first time, enabling us to now test the existence of event horizons. Although event horizons have by definition no observable features, one can look for their non-existence. In that case, it is likely that there is some kind of surface, which like any other surface could absorb (and thermally emit) and/or reflect radiation. In this paper, we study the potential observable features of such rotating reflecting surfaces. We construct a general description of reflecting surfaces in arbitrary spacetimes. This is used to define specific models for static and rotating reflecting surfaces, of which we study the corresponding light paths and synthetic images. This is done by numerical integration of the geodesic equation and by the use of the general relativistic radiative transfer code RAPTOR. The reflecting surface creates an infinite set of ring-like features in synthetic images inside the photon ring. There is a central ring in the middle and higher order rings subsequently lie exterior to each other converging to the photon ring. The shape and size of the ring features change only slightly with the radius of the surface R, spin a and inclination i, resulting in all cases in features inside the 'shadow region'. We conclude that rotating reflecting surfaces have clear observable features and that the Event Horizon Telescope is able to observe the difference between reflecting surfaces and an event horizon for high reflectivities. Such reflecting surface models can be excluded, which strengthens the conclusion that the black hole shadow indeed indicates the existence of an event horizon.
description: 14 pages, 10 figures; submitted to Astronomy and Astrophysics
Exploiting the local polarization of strongly confined light for sub-micron-resolution internal state preparation and manipulation of cold atoms
Creators: name: Mitsch, R.
name: Sayrin, C.
name: Albrecht, B.
name: Schneeweiss, P.
name: Rauschenbeutel, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A strongly confined light field necessarily exhibits a local polarization that varies on a subwavelength scale. We demonstrate that a single optical mode of such kind can be used to selectively and simultaneously manipulate atomic ensembles that are less than a micron away from each other and equally coupled to the light field. The technique is implemented with an optical nanofiber that provides an evanescent field interface between a strongly guided optical mode and two diametric linear arrays of cesium atoms. Using this single optical mode, the two atomic ensembles can simultaneously be optically pumped to opposite Zeeman states. Moreover, the state-dependent light shifts can be made locally distinct, thereby enabling an independent coherent manipulation of the two ensembles. Our results open the route towards advanced manipulation of atomic samples in nanoscale quantum optics systems.
Новосадски договор (1954) – израз лажног политичког, а не језичког јединства
Creators: name: Радић, Првослав
Publisher: name: Zenodo
Year: 2019
Subjects: Новосадски договор
језичко јединство
српски језик
српскохрватски језик
лингвистика
политичко јединство

description: Када је наступило државно јединство током двадесетог века, било је потребно удружити се и у језику. Зато је од српског, како је називан језик до краја Првог светског рата, настао српскохрватски језик (на почетку Краљевине СХС звао се и српско-хрватско-словеначки). Скуп лингвиста и књижевника у Новом Саду одржан је 8, 9. и 10. децембра 1954.
Interface deformations affect the orientation transition of magnetic ellipsoidal particles adsorbed at fluid-fluid interfaces
Creators: name: Davies, Gary B.
name: Krüger, Timm
name: Coveney, Peter V.
name: Harting, Jens
name: Bresme, Fernando
Publisher: name: arXiv
Year: 2014
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Manufacturing new soft materials with specific optical, mechanical and magnetic properties is a significant challenge. Assembling and manipulating colloidal particles at fluid interfaces is a promising way to make such materials. We use lattice-Boltzmann simulations to investigate the response of magnetic ellipsoidal particles adsorbed at liquid-liquid interfaces to external magnetic fields. We provide further evidence for the first-order orientation phase transition predicted by Bresme and Faraudo [Journal of Physics: Condensed Matter 19 (2007), 375110]. We show that capillary interface deformations around the ellipsoidal particle significantly affect the tilt-angle of the particle for a given dipole-field strength, altering the properties of the orientation transition. We propose scaling laws governing this transition, and suggest how to use these deformations to facilitate particle assembly at fluid-fluid interfaces.
description: 7 pages, 8 figures
Narrowing the filter cavity bandwidth via optomechanical interaction
Creators: name: Ma, Yiqiu
name: Danilishin, Stefan L.
name: Zhao, Chunnong
name: Miao, Haixing
name: Korth, W. Z.
name: Chen, Yanbei.
name: Ward, Robert
name: Blair, David. G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose using optomechanical interaction to narrow the bandwidth of filter cavities for achieving frequency-dependent squeezing in advanced gravitational-wave detectors, inspired by the idea of optomechanically induced transparency. This not only allows us to achieve narrow bandwidth, comparable to the detection band of few hundred Hz, with tabletop optical cavities, but also to tune the bandwidth over a wide range, which is ideal for optimizing sensitivity for different gravitational-wave sources. The experimental challenge for its implementation is the stringent requirement on low thermal noise, which would need superb mechanical quality factor that is quite difficult to achieve by using currently-available low-loss mechanical oscillators; one possible solution is to use optical dilution of the mechanical damping, which can considerably relax the requirement on the mechanics.
description: 5 pages + 3 appendix. 4 figures and 2 tables Accepted by Physical Review Letters
A Portable Parton-Level Event Generator for the High-Luminosity LHC
Creators: name: Bothmann, Enrico
name: Childers, Taylor
name: Giele, Walter
name: Höche, Stefan
name: Isaacson, Joshua
name: Knobbe, Max
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The rapid deployment of computing hardware different from the traditional CPU+RAM model in data centers around the world mandates a change in the design of event generators for the Large Hadron Collider, in order to provide economically and ecologically sustainable simulations for the high-luminosity era of the LHC. Parton-level event generation is one of the most computationally demanding parts of the simulation and is therefore a prime target for improvements. We present a production-ready leading-order parton-level event generation framework capable of utilizing most modern hardware and discuss its performance in the standard candle processes of vector boson and top-quark pair production with up to five additional jets.
description: Submission to SciPost, 32 pages, 11 figures, 2 tables; this is a new version that contains extended discussions and additional content, in particular the new appendix E on CPU vectorization
Relativistic corrections to the central force problem in a generalized potential approach
Creators: name: Singh, Ashmeet
name: Patra, Binoy Krishna
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Physics (physics.class-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a novel technique to obtain relativistic corrections to the central force problem in the Lagrangian formulation, using a generalized potential energy function. We derive a general expression for a generalized potential energy function for all powers of the velocity, which when made a part of the regular classical Lagrangian can reproduce the correct (relativistic) force equation. We then go on to derive the Hamiltonian and estimate the corrections to the total energy of the system up to the fourth power in $|\vec{v}|/c$. We found that our work is able to provide a more comprehensive understanding of relativistic corrections to the central force results and provides corrections to both the kinetic and potential energy of the system. We employ our methodology to calculate relativistic corrections to the circular orbit under the gravitational force and also the first-order corrections to the ground state energy of the hydrogen atom using a semi-classical approach. Our predictions in both problems give reasonable agreement with the known results. Thus we feel that this work has pedagogical value and can be used by undergraduate students to better understand the central force and the relativistic corrections to it.
description: 8 pages, no figures; Arguments strengthened in Section 2, analysis made valid for all powers in $|\vec{v}|/c$ in Section 3 and 4, perturbation results for hydrogen atom extended till fourth power and arguments added in Section 5.2, References added. Accepted for publication in Canadian Journal of Physics
An Investigation of Factors Influencing Burnout among English Teachers in High Schools and Language Institutes and Efficient Coping Strategiess
Creators: name: Nafissi, Zohreh
name: Mirzakhanian, Elahe
Publisher: name: Zenodo
Year: 2020
Subjects: Burnout
English teachers
Language Institutes
High School
Coping Strategies

description: This is the title of a presentation at the 15th Asia TEFL & 64th TEFLIN International Conference, co-hosted by Universitas Negeri Yogyakarta, TEFLIN, and Asia TEFL, 13-15 July 2017.
X-ray Redshifts for Obscured Active Galactic Nuclei with AXIS Deep and Intermediate Surveys
Creators: name: Peca, Alessandro
name: Cappelluti, Nico
name: Marchesi, Stefano
name: Hodges-Kluck, Edmund
name: Foord, Adi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This study presents the capabilities of the AXIS telescope in estimating redshifts from X-ray spectra alone (X-ray redshifts, XZs). Through extensive simulations, we establish that AXIS observations enable reliable XZ estimates for more than 5500 obscured Active Galactic Nuclei (AGN) up to redshift $z\sim 6$ in the proposed deep (7 Ms) and intermediate (375 ks) surveys. Notably, at least 1600 of them are expected to be in the Compton-Thick regime ($\log N_H/\mathrm{cm^{-2}}\geq 24$), underscoring the pivotal role of AXIS in sample these elusive objects that continue to be poorly understood. XZs provide an efficient alternative for optical/infrared faint sources, overcoming the need for time-consuming spectroscopy, potential limitations of photometric redshifts, and potential issues related to multi-band counterpart association. This approach will significantly enhance the accuracy of constraints on the X-ray luminosity function and obscured AGN fractions up to high redshift. This White Paper is part of a series commissioned for the AXIS Probe Concept Mission; additional AXIS White Papers can be found at the AXIS website (http://axis.astro.umd.edu) with a mission overview here: arXiv:2311.00780.
ICT4Inclusion: Entwicklungsmöglichkeiten am Heilpädagogischen Zentrum Hagendorn. Eine qualitative Interviewstudie
Creators: name: Mettler, Hildegard
Publisher: name: Zenodo
Year: 2022
Subjects: Sonderpädagogik
Masterarbeit
ICT4Inclusion
Hagendorn

description: Das Heilpädagogische Zentrum Hagendorn (HZH) – eine Sonderschule für Kinder und Jugendliche mit kognitiven bzw. schweren und mehrfachen Beeinträchtigungen – möchte die Chancen der Digitalisierung für die Kinder und Jugendlichen nutzen und die daraus entstehenden Risiken und Barrieren minimieren (ICT4Inclusion). Daher wurde in dieser Entwicklungsarbeit der Frage nachgegangen, wie Informations- und Kommunikationstechnologien am HZH zukünftig noch besser genutzt und Zugänge ermöglicht werden können, um Barrieren abzubauen. Umgesetzt wurde das Vorhaben mittels qualitativer, leitfadengestützter Experteninterviews. Die Ergebnisse aus der Inhaltsanalyse zeigen Herausforderungen in unterschiedlichen Bereichen: u.a. Infrastruktur, Schulung des Personals, Zugänglichkeit zu den Medien durch individuelle Anpassungen und Hilfen sowie bei der Elementarisierung des Lerninhalts.
A model of financial contagion with variable asset returns may be replaced with a simple threshold model of cascades
Creators: name: Kobayashi, Teruyoshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: I show the equivalence between a model of financial contagion and the threshold model of global cascades proposed by Watts (2002). The model financial network comprises banks that hold risky external assets as well as interbank assets. It is shown that a simple threshold model can replicate the size and the frequency of financial contagion without using information about individual balance sheets. Keywords: financial network, cascades, financial contagion, systemic risk.
description: 8 pages, including 2 figures
Administration von APCs mit EPrints
Creators: name: Deinzer, Gernot
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: EPrints , Article Processing Charge , APC
subject: 020 Bibliotheks- und Informationswissenschaft

description: Es wird die Anpassung von EPrints zur Verwaltung von Artikelbearbeitungsgebühren (Article Processing Charges APCs) erläutert.
description: Die Umsetzung ist auf den Seiten Open Access Publizieren (siehe Verwandte URL) durchgeführt.
A Systematic Review of Aspect-based Sentiment Analysis: Domains, Methods, and Trends
Creators: name: Hua, Yan Cathy
name: Denny, Paul
name: Taskova, Katerina
name: Wicker, Jörg
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Aspect-based sentiment analysis (ABSA) is a fine-grained type of sentiment analysis that identifies aspects and their associated opinions from a given text. With the surge of digital opinionated text data, ABSA gained increasing popularity for its ability to mine more detailed and targeted insights. Many review papers on ABSA subtasks and solution methodologies exist, however, few focus on trends over time or systemic issues relating to research application domains, datasets, and solution approaches. To fill the gap, this paper presents a systematic literature review (SLR) of ABSA studies with a focus on trends and high-level relationships among these fundamental components. This review is one of the largest SLRs on ABSA. To our knowledge, it is also the first to systematically examine the interrelations among ABSA research and data distribution across domains, as well as trends in solution paradigms and approaches. Our sample includes 727 primary studies screened from 8550 search results without time constraints via an innovative automatic filtering process. Our quantitative analysis not only identifies trends in nearly two decades of ABSA research development but also unveils a systemic lack of dataset and domain diversity as well as domain mismatch that may hinder the development of future ABSA research. We discuss these findings and their implications and propose suggestions for future research.
Anomalous magnetization of a carbon nanotube as an excitonic insulator
Creators: name: Rontani, Massimo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show theoretically that an undoped carbon nanotube might be an excitonic insulator---the long-sought phase of matter proposed by Keldysh, Kohn and others fifty years ago. We predict that the condensation of triplet excitons, driven by intervalley exchange interaction, spontaneously occurs at equilibrium if the tube radius is sufficiently small. The signatures of exciton condensation are its sizeable contributions to both the energy gap and the magnetic moment per electron. The increase of the gap might have already been measured, albeit with a different explanation [Deshpande et al., Science 323, 106 (2009)]. The enhancement of the quasiparticle magnetic moment is a pair-breaking effect that counteracts the weak paramagnetism of the ground-state condensate of excitons. This property could rationalize the anomalous magnitude of magnetic moments recently observed in different devices close to charge neutrality.
description: Major revision with new results and largely expanded discussion of experimental literature
Integral homology of real isotropic and odd orthogonal Grassmannians
Creators: name: Lambert, Jordan
name: Rabelo, Lonardo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Topology (math.AT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05A05, 05E15, 14M15, 57T15

description: We obtain a combinatorial expression for the coefficients of the boundary map of real isotropic and odd orthogonal Grassmannians providing a natural generalization of the formulas already obtained for Lagrangian and maximal isotropic Grassmannians. The results are given in terms of the classification into four types of covering pairs among the Schubert cells when identified with signed $k$-Grassmannian permutations. It turns out that these coefficients only depend on the positions changed over each pair of permutations. As an application, we give an orientability criterion, exhibit a symmetry of these coefficients and, compute low-dimensional homology groups.
description: 24 pages, 8 figures. We have improved the main results
Non-classicality of positive relativistic Wigner function
Creators: name: Campos, Andre G.
name: Cabrera, Renan
name: Bondar, Denys I.
name: Rabitz, Herschel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In nonrelativistic quantum mechanics, Hudsons theorem states that a Gaussian wavefunction is the only pure state corresponding to a positive Wigner function (WF). We explicitly construct non Gaussian Dirac spinors with positive relativistic WF. These pure states are coherent superpositions of particles and antiparticles, while the existence of positive WF exclusive composed of particles is conjectured. These observations challenge a common belief that states with positive WF are classical or have classical analogues, and may open new venues in relativistic quantum information.
Strain-induced partially flat band, helical snake states, and interface superconductivity in topological crystalline insulators
Creators: name: Tang, Evelyn
name: Fu, Liang
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: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological crystalline insulators in IV-VI compounds host novel topological surface states consisting of multi-valley massless Dirac fermions at low energy. Here we show that strain generically acts as an effective gauge field on these Dirac fermions and creates pseudo-Landau orbitals without breaking time-reversal symmetry. We predict the realization of this phenomenon in IV-VI semiconductor heterostructures, due to a naturally occurring misfit dislocation array at the interface that produces a periodically varying strain field. Remarkably, the zero-energy Landau orbitals form a flat band in the vicinity of the Dirac point, and coexist with a network of snake states at higher energy. We propose that the high density of states of this flat band gives rise to interface superconductivity observed in IV-VI semiconductor multilayers at unusually high temperatures, with non-BCS behavior. Our work demonstrates a new route to altering macroscopic electronic properties to achieve a partially flat band, and paves the way for realizing novel correlated states of matter.
description: Accepted by Nature Physics
End-to-end complexity for simulating the Schwinger model on quantum computers
Creators: name: Sakamoto, Kazuki
name: Morisaki, Hayata
name: Haruna, Junichi
name: Itou, Etsuko
name: Fujii, Keisuke
name: Mitarai, Kosuke
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Schwinger model is one of the simplest gauge theories. It is known that a topological term of the model leads to the infamous sign problem in the classical Monte Carlo method. In contrast to this, recently, quantum computing in Hamiltonian formalism has gained attention. In this work, we estimate the resources needed for quantum computers to compute physical quantities that are challenging to compute on classical computers. Specifically, we propose an efficient implementation of block-encoding of the Schwinger model Hamiltonian. Considering the structure of the Hamiltonian, this block-encoding with a normalization factor of $\mathcal{O}(N^3)$ can be implemented using $\mathcal{O}(N+\log^2(N/\varepsilon))$ T gates. As an end-to-end application, we compute the vacuum persistence amplitude. As a result, we found that for a system size $N=128$ and an additive error $\varepsilon=0.01$, with an evolution time $t$ and a lattice spacing a satisfying $t/2a=10$, the vacuum persistence amplitude can be calculated using about $10^{13}$ T gates. Our results provide insights into predictions about the performance of quantum computers in the FTQC and early FTQC era, clarifying the challenges in solving meaningful problems within a realistic timeframe.
description: 34 pages, 16 figures