cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Systematics of the Induced Magnetic Moments in 5d Layers and the Violation of the Third Hund's Rule
Creators: name: Baberschke, K.
name: Poulopoulos, P.
name: Scherz, A.
name: Wende, H.
name: Wilhelm, F.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Static surface mode expansion for the full-wave scattering from penetrable objects
Creators: name: Forestiere, Carlo
name: Gravina, Giovanni
name: Miano, Giovanni
name: Rubinacci, Guglielmo
name: Tamburrino, Antonello
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We introduce the longitudinal and transverse static surface modes and use them to solve the full-wave electromagnetic scattering problem from penetrable objects. The longitudinal static modes are the eigenmodes with zero surface curl of the electrostatic integral operator that gives the tangential component of the electric field, as a function of the surface charge density. The transverse static modes are the eigenmodes with zero surface divergence of the magnetostatic integral operator that returns the tangential component of the vector potential, as a function of the surface current distribution. The static modes only depend on the shape of the object, thus, the same static basis can be used regardless of the frequency of operation and of the material constituting the object. We expand the unknown surface currents of the Poggio-Miller-Chang-Harrington-Wu-Tsai surface integral equations in terms of the static surface modes and solve them using the Galerkin-projection scheme. The static modes expansion allows the regularization of the singular integral operators and yields a drastic reduction of the number of unknowns compared to a discretization based on sub-domain basis functions. The introduced expansion significantly reduces the cpu-time required for the numerical solution of the scattering problem from particle arrays.
Extended X-ray Monitoring of Gravitational Lenses with Chandra and Joint Constraints on X-ray Emission Regions
Creators: name: Guerras, Eduardo
name: Dai, Xinyu
name: Steele, Shaun
name: Liu, Ang
name: Kochanek, Christopher S.
name: Chartas, George
name: Morgan, Christopher W.
name: Chen, Bin
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present an X-ray photometric analysis of six gravitationally lensed quasars, with observation campaigns spanning from 5 to 14 years, measuring the total (0.83 - 21.8 keV restframe), soft (0.83 - 3.6 keV), and hard (3.6 - 21.8 keV) band image flux ratios or each epoch. Using the ratios of the model-predicted macro-magnifications as baselines, we build differential microlensing light curves and obtain joint likelihood functions for the average X-ray emission region sizes. Our analysis yields a Probability Distribution Function for the average half-light radius of the X-Ray emission region in the sample that peaks slightly above 1 gravitational radius and with nearly indistinguishable 68% confidence (one-sided) upper limits of 17.8 and 18.9 gravitational radii for the soft and hard X-ray emitting regions, assuming a mean stellar mass of 0.3 solar masses. We see hints of energy dependent microlensing between the soft and hard bands in two of the objects. In a separate analysis on the root-mean-square of the microlensing variability, we find significant differences between the soft and hard bands but the sign of the difference is not consistent across the sample. This suggests the existence of some kind of spatial structure to the X-ray emission in an otherwise extremely compact source. We also discover a correlation between the RMS microlensing variability and the average microlensing amplitude.
Length-dependent thermopower of single-molecule junctions
Creators: name: Zimbovskaya, Natalya A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In the present work we theoretically study the length dependence of thermopower of a single-molecule junction with a chain-like molecular bridge of an arbitrary length using a tight-binding model. We analyze conditions bringing a nonlinear growth of the thermopower accompanying the extension of the bridge length. Also, we show that the thermopower may decrease with increasing molecular length provided that the molecular bridge is sufficiently long.
description: 4 pages, 3 figures, Accepted in J. Chem. Phys
Entropy, decay and disorder : representations of the masculine face
Creators: name: Neville, Greg.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Kernel-Function Based Quantum Algorithms for Finite Temperature Quantum Simulation
Creators: name: Wang, Hai
name: Nan, Jue
name: Zhang, Tao
name: Qiu, Xingze
name: Chen, Wenlan
name: Li, Xiaopeng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Computing finite temperature properties of a quantum many-body system is key to describing a broad range of correlated quantum many-body physics from quantum chemistry and condensed matter to thermal quantum field theories. Quantum computing with rapid developments in recent years has a huge potential to impact the computation of quantum thermodynamics. To fulfill the potential impacts, it is crucial to design quantum algorithms that utilize the computation power of the quantum computing devices. Here we present a quantum kernel function expansion (QKFE) algorithm for solving thermodynamic properties of quantum many-body systems. In this quantum algorithm, the many-body density of states is approximated by a kernel-Fourier expansion, whose expansion moments are obtained by random state sampling and quantum interferometric measurements. As compared to its classical counterpart, namely the kernel polynomial method (KPM), QKFE has an exponential advantage in the cost of both time and memory. In computing low temperature properties, QKFE becomes inefficient, as similar to classical KPM. To resolve this difficulty, we further construct a thermal ensemble and approaches the low temperature regime step-by-step. For quantum Hamiltonians, whose ground states are preparable with polynomial quantum circuits, THEI has an overall polynomial complexity. We demonstrate its efficiency with applications to one and two-dimensional quantum spin models, and a fermionic lattice. With our analysis on the realization with digital and analogue quantum devices, we expect the quantum algorithm is accessible to current quantum technology.
description: 11 pages, 5 figures
Entanglement-symmetry control in a quantum-dot Cooper-pair splitter
Creators: name: Hussein, Robert
name: Braggio, Alessandro
name: Governale, Michele
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The control of nonlocal entanglement in solid state systems is a crucial ingredient of quantum technologies. We investigate a Cooper-pair splitter based on a double quantum dot realised in a semiconducting nanowire. In the presence of interdot tunnelling the system provides a simple mechanism to develop spatial entanglement even in absence of nonlocal coupling with the superconducting lead. We discuss the possibility to control the symmetry (singlet or triplet) of spatially separated, entangled electron pairs taking advantage of the spin-orbit coupling of the nanowire. We also demonstrate that the spin-orbit coupling does not impact over the entanglement purity of the nonlocal state generated in the double quantum dot system.
description: 7 pages, 3 figures
Star Streams and the Assembly History of the Galaxy
Creators: name: Carlberg, Raymond G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Thin halo star streams originate from the evaporation of globular clusters and therefore provide information about the early epoch globular cluster population. The observed tidal tails from halo globular clusters in the Milky Way are much more shorter than expected from a star cluster orbiting for 10~Gyr. The discrepancy is likely the result of the assumption that the clusters have been orbiting in a non-evolving galactic halo for a Hubble time. As a first step towards more realistic stream histories, a toy model that combines an idealized merger model with a simplified model of the internal collisional relaxation of individual star clusters is developed. On the average, the velocity dispersion increases with distance causing the density of the stream to decline with distance. Consequently, the streams visible in current data will normally be some fraction of the entire stream. Nevertheless, the high surface density segment of the stellar streams created from the evaporation of the more massive globular clusters should all be visible in low obscuration parts of the sky if closer than about 30~kpc. The Pan-STARRS1 halo volume is used to compare the numbers of halo streams and globular clusters.
description: revised version
Strong convergence of an fractional exponential integrator scheme for the finite element discretization of time-fractional SPDE driven by standard and fractional Brownian motions
Creators: name: Noupelah, Aurelien Junior
name: Tambue, Antoine
name: Woukeng, Jean Louis
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The aim of this work is to provide the first strong convergence result of numerical approximation of a general time-fractional second order stochastic partial differential equation involving a Caputo derivative in time of order $α\in(\frac 12; 1)$ and driven simultaneously by a multiplicative standard Brownian motion and additive fBm with Hurst parameter $H\in(\frac 12, 1)$, more realistic to model the random effects on transport of particles in medium with thermal memory. We prove the existence and uniqueness results and perform the spatial discretization using the finite element and the temporal discretization using a fractional exponential integrator scheme. We provide the temporal and spatial convergence proofs for our fully discrete scheme and the result shows that the convergence orders depend on the regularity of the initial data, the power of the fractional derivative, and the Hurst parameter $H$.
description: arXiv admin note: text overlap with arXiv:2011.03862, arXiv:1912.12751
Challenges and Prospects of BSC implementation in Ethio telecom: The Case of Customer service division
Creators: name: Haymanot, Hailezgy
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: This study is intended to assess the main challenges and key success factors of BSC implementation in ethiotelecom specifically in customer service division. All employees of customer service division were taken as population of the study and a sample size of 93 were drawn from the population. Primary data for analysis has been collected through structured questionnaire and key informant interview to answer the established research questions about basic challenges of BSC implementation, the implementation level of BSC and key success factors to successfully implement BSC in the division. Descriptive method of data analysis was applied using mean, frequencies and standard deviations to address the specific objectives of the study. Based on this, the study identified that lack of effective communication and creating adequate understanding about BSC on employees by allocating sufficient time for that before implementing the tool, lack of periodic training about BSC as demonstrative training or any other form to empower employees once it becomes operational and lack of consistent support from top management in implementing BSC in the division were identified as bottle necks in implementing BSC. Regarding implementation level, BSC is properly implemented in the division except explaining KPI parameters by concerned body and individuals reach at consensus on its implementation which needs certain improvement. About the key success factors the study found that being online service, availability of competent staffs and availability of adequate and appropriate technologies enables the division to successfully implement BSC. Finally the study proposes effective communication about newly implemented project and its objective with all stakeholders is necessary, consistent periodical trainings either quarterly, semiannually or annually to update the knowledge of its staffs about BSC and empower them to independently and appropriately apply it, sufficient and consistent support and end to end follow up from top management is important and customer service division must create a condition for staffs that can sufficiently motivate by providing appropriate motivation packages for best performer individuals by BSC.
Gowers norms of multiplicative functions in progressions on average
Creators: name: Shao, Xuancheng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let $μ$ be the Möbius function and let $k \geq 1$. We prove that the Gowers $U^k$-norm of $μ$ restricted to progressions $\{n \leq X: n\equiv a_q\pmod{q}\}$ is $o(1)$ on average over $q\leq X^{1/2-σ}$ for any $σ> 0$, where $a_q\pmod{q}$ is an arbitrary residue class with $(a_q,q) = 1$. This generalizes the Bombieri-Vinogradov inequality for $μ$, which corresponds to the special case $k=1$.
description: 20 pages
Assessment of the Challenge and Opportunities of Preparation and Utilization of Program Budget in Case of Federal Democratic Republic of Ethiopian Government House of People Representative
Creators: name: Buno, Abera
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Globally, Budget is central to realize national development, goals and programs In the case of Ethiopian budget classification system were assigned to public bodies and their respective departments make division for their effective use of devolution. the annual report of finance department shows the existence of inefficiencies in budget preparation and utilization , that may hinder the preparation and utilization of budgeting in the HPR. Thus, the general objective of the study is to assess the challenge and opportunities of budget preparation and utilization in case of HPR, both qualitative and quantitative methods and descriptive data presentation were done. The data were entered into a computer using to SPSS for Windows version 21.0 version for analysis. The result of the study demonstrate that there was no accountability in budget utilization, lack of attention in program budget preparation and estimation,. lack of adequate and experience program budget experts and deficiency of staff training ,lack follow up monitoring and evaluation mechanisms and absence of computerized information technology system in the institution Therefore, in order to improve budget preparation and utilization in HPR, it calls for assign skilled human power, conduct training for staff members, continuous and strong follow up by leaders should be conducted and software access to information technology of computer networking system remedial actions in the subsequent years. Keywords: program budgeting system, House of People Representative, program budget planning department
Entanglement entropy of the large $N$ Wilson-Fisher conformal field theory
Creators: name: Whitsitt, Seth
name: Witczak-Krempa, William
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the entanglement entropy of the Wilson-Fisher conformal field theory (CFT) in 2+1 dimensions with O($N$) symmetry in the limit of large $N$ for general entanglement geometries. We show that the leading large $N$ result can be obtained from the entanglement entropy of $N$ Gaussian scalar fields with their mass determined by the geometry. For a few geometries, the universal part of the entanglement entropy of the Wilson-Fisher CFT equals that of a CFT of $N$ massless scalar fields. However, in most cases, these CFTs have a distinct universal entanglement entropy even at $N=\infty$. Notably, for a semi-infinite cylindrical region it scales as $N^0$, in stark contrast to the $N$-linear result of the Gaussian fixed point.
description: (v3) 23 pages, 3 figures. Published version. Added references, minor corrections and clarifications
Can the Many-Worlds-Interpretation be probed in Psychology?
Creators: name: Päs, Heinrich
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A minimal approach to the measurement problem and the quantum-to-classical transition assumes a universally valid quantum formalism, i.e. unitary time evolution governed by a Schrödinger-type equation. As had been pointed out long ago, in this view the measurement process can be described by decoherence which results in a "Many-Worlds" or "Many-Minds" scenario according to Everett and Zeh. A silent assumption for decoherence to proceed is however, that there exists incomplete information about the environment our object system gets entangled with in the measurement process. This paper addresses the question where this information is traced out and - by adopting recent approaches to model consciousness in neuroscience - argues that a rigorous interpretation results in a modern perspective on the von-Neumann-Wigner interpretation - namely that the information that is or is not available in the consciousness of the observer is crucial for the definition of the environment. As such the quantum-to-classical transition while being difficult or impossible to probe in physics may become testable in psychology.
description: 8 pages, no figures, version to be published in the International Journal of Quantum Foundations
Always between us : bodies, boundaries and liminal space
Creators: name: Elliot, Michele.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Cohomology and deformations of compatible Hom-Lie algebras
Creators: name: Das, Apurba
Publisher: name: arXiv
Year: 2022
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 17B61, 17A30, 17B56, 16S80

description: In this paper, we consider compatible Hom-Lie algebras as a twisted version of compatible Lie algebras. Compatible Hom-Lie algebras are characterized as Maurer-Cartan elements in a suitable bidifferential graded Lie algebra. We also define a cohomology theory for compatible Hom-Lie algebras generalizing the recent work of Liu, Sheng and Bai. As applications of cohomology, we study abelian extensions and deformations of compatible Hom-Lie algebras.
description: 17pages; comments are welcome
Hot dense magnetized ultrarelativistic spinor matter in a slab
Creators: name: Sitenko, Yu. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Properties of hot dense ultrarelativistic spinor matter in a slab of finite width, placed in a transverse uniform magnetic field, are studied. The admissible set of boundary conditions is determined by the requirement that spinor matter be confined inside the slab. In thermal equilibrium, the chiral separation effect in the slab is shown to depend on both temperature and chemical potential; this is distinct from the unrealistic case of the magnetic field filling the unbounded (infinite) medium, when the effect is temperature independent. In the realistic case of the slab, a stepwise behaviour of the axial current density at zero temperature is smoothed out as temperature increases, turning into a linear behaviour at infinitely large temperature. A choice of boundary conditions can facilitate either augmentation or attenuation of the chiral separation effect; in particular, the effect can persist even at zero chemical potential, if temperature is finite. Thus the boundary condition can serve as a source that is additional to the spinor matter density.
description: 29 pages, 5 figures, contribution of vacuum fluctuations taken into account, discussions in Sections 4 and 5 added, three references added. arXiv admin note: text overlap with arXiv:1603.09268
title: Ð¢ÐµÐ¾ÑÐ¸Ñ Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ° ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð¹ ÐºÑÐ»ÑÑÑÑÑ, ÑÐ¿Ð¾ÑÑÐ° Ð¸ ÑÑÑÐ¸Ð·Ð¼Ð°
title: Ð¼ÐµÐ¶Ð²ÑÐ·Ð¾Ð²ÑÐºÐ¸Ð¹ ÑÐ±Ð¾ÑÐ½Ð¸Ðº Ð½Ð°ÑÑÐ½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°Ð±Ð¾Ñ
titleType: Subtitle
Creators: name: Ð¡ÑÑÐµÐ½ÐºÐ¾, ÐÐ°Ð»ÐµÑÐ¸Ð¹
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2023
Subjects: ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ°Ñ ÐºÑÐ»ÑÑÑÑÐ° Ð¸ ÑÐ¿Ð¾ÑÑ
ÑÐµÐ¾ÑÐ¸Ñ Ð¸ Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ°

description: ÐÐ°ÑÐµÑÐ¸Ð°Ð»Ñ Ð¼ÐµÐ¶Ð²ÑÐ·Ð¾Ð²ÑÐºÐ¾Ð³Ð¾ ÑÐ±Ð¾ÑÐ½Ð¸ÐºÐ° Ð½Ð°ÑÑÐ½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ°Ð±Ð¾Ñ ÑÐ°ÑÐºÑÑÐ²Ð°ÑÑ Ð°ÐºÑÑÐ°Ð»ÑÐ½ÑÐµ Ð²Ð¾Ð¿ÑÐ¾ÑÑ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð¹ ÐºÑÐ»ÑÑÑÑÑ Ð¸ ÑÐ¿Ð¾ÑÑÐ° Ð² ÑÐ¾Ð²ÑÐµÐ¼ÐµÐ½Ð½Ð¾Ð¼ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¼ Ð¾Ð±ÑÐ°Ð·Ð¾Ð²Ð°Ð½Ð¸Ð¸. Ð¡Ð±Ð¾ÑÐ½Ð¸Ðº ÑÐ¾Ð´ÐµÑÐ¶Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð² Ð¾Ð±Ð»Ð°ÑÑÐ¸ Ð¿ÑÐ¾ÑÐµÑÑÐ¸Ð¾Ð½Ð°Ð»ÑÐ½Ð¾Ð¹ Ð¸ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð¹ Ð¿Ð¾Ð´Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÐºÐ°ÑÐµÐ³Ð¾ÑÐ¸Ð¹ ÑÐ¿ÐµÑÐ¸Ð°Ð»Ð¸ÑÑÐ¾Ð². ÐÐ·Ð´Ð°Ð½Ð¸Ðµ ÑÐµÐºÐ¾Ð¼ÐµÐ½Ð´Ð¾Ð²Ð°Ð½Ð¾ Ðº Ð¿ÐµÑÐ°ÑÐ¸ Ð½Ð°ÑÑÐ½Ð¾-Ð¼ÐµÑÐ¾Ð´Ð¸ÑÐµÑÐºÐ¸Ð¼ ÑÐ¾Ð²ÐµÑÐ¾Ð¼ ÐºÐ°ÑÐµÐ´Ñ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð²Ð¾ÑÐ¿Ð¸ÑÐ°Ð½Ð¸Ñ Ð²ÑÑÑÐ¸Ñ ÑÑÐµÐ±Ð½ÑÑ Ð·Ð°Ð²ÐµÐ´ÐµÐ½Ð¸Ð¹ Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³Ð°.
A Lower Bound on the Failed Zero Forcing Number of a Graph
Creators: name: Ufferman, Eric
name: Swanson, Nicolas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Given a graph $G=(V,E)$ and a set of vertices marked as filled, we consider a color-change rule known as zero forcing. A set $S$ is a zero forcing set if filling $S$ and applying all possible instances of the color change rule causes all vertices in $V$ to be filled. A failed zero forcing set is a set of vertices that is not a zero forcing set. Given a graph $G$, the failed zero forcing number $F(G)$ is the maximum size of a failed zero forcing set. An open question was whether given any $k$ there is a an $\ell$ such that all graphs with at least $\ell$ vertices must satisfy $F(G)\geq k$. We answer this question affirmatively by proving that for a graph $G$ with $n$ vertices, $F(G)\geq \lfloor\frac{n-1}{2}\rfloor$.
description: 11 pages, 13 figures. Comments welcome
Entropic Fictitious Play for Mean Field Optimization Problem
Creators: name: Chen, Fan
name: Ren, Zhenjie
name: Wang, Songbo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: We study two-layer neural networks in the mean field limit, where the number of neurons tends to infinity. In this regime, the optimization over the neuron parameters becomes the optimization over the probability measures, and by adding an entropic regularizer, the minimizer of the problem is identified as a fixed point. We propose a novel training algorithm named entropic fictitious play, inspired by the classical fictitious play in game theory for learning Nash equilibriums, to recover this fixed point, and the algorithm exhibits a two-loop iteration structure. Exponential convergence is proved in this paper and we also verify our theoretical results by simple numerical examples.
description: 36 pages, 2 figures; version accepted by Journal of Machine Learning Research
Factors Affecting Brand Awareness in the Ethiopian Leather Footwear Industry
Creators: name: Jemal, Shemila
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: The main aim of this research was to assess the factors that influence brand awareness in leather footwear industry in Ethiopia. Four determinants: brand perception, advertising, perceived quality and product innovation have been kept in mind while doing this research. The study used both qualitative and quantitative techniques in which 50 respondents from Addis Ababa were included. In this study structured questionnaire for customers identified through convenience sampling and an interview was made to marketing managers of sample five footwear producers engaged both in domestic and international markets. The researcher used person correlation and regression analysis to analyze the data. The result of the study shows that among the four variables brand perception, and perceived quality have a significant positive impact on brand awareness of local leather footwear while advertising and product innovation do not have.
Mass Generation, the Cosmological Constant Problem, Conformal Symmetry, and the Higgs Boson
Creators: name: Mannheim, Philip D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In 2013 the Nobel Prize in Physics was awarded to Francois Englert and Peter Higgs for their work in 1964 along with the late Robert Brout on the mass generation mechanism (the Higgs mechanism) in local gauge theories. This mechanism requires the existence of a massive scalar particle, the Higgs boson, and in 2012 the Higgs boson was finally discovered at the Large Hadron Collider after being sought for almost half a century. In this article we review the work that led to the discovery of the Higgs boson and discuss its implications. We approach the topic from the perspective of a dynamically generated Higgs boson that is a fermion-antifermion bound state rather than an elementary field that appears in an input Lagrangian. In particular, we emphasize the connection with the Barden-Cooper-Schrieffer theory of superconductivity. We identify the double-well Higgs potential not as a fundamental potential but as a mean-field effective Lagrangian with a dynamical Higgs boson being generated through a residual interaction that accompanies the mean-field Lagrangian. We discuss what we believe to be the key challenge raised by the discovery of the Higgs boson, namely determining whether it is elementary or composite, and through study of a conformal invariant field theory model as realized with critical scaling and anomalous dimensions, suggest that the width of the Higgs boson might serve as a suitable diagnostic for discriminating between an elementary Higgs boson and a composite one. We show that the contribution to the cosmological constant due to a composite Higgs boson is more tractable and under control than the contribution due to an elementary Higgs boson, and is potentially completely under control if there is an underlying conformal symmetry not just in a critical scaling matter sector, but equally in the gravity sector to which the matter sector couples.
description: 84 pages, 21 figures. Updated, includes discussion of renormalizability of four-fermion interaction. Review article, prepared for Progress in Particle and Nuclear Physics
Pfaffians and nonintersecting paths in graphs with cycles: Grassmann algebra methods
Creators: name: Carrozza, Sylvain
name: Tanasa, Adrian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: After recalling the definition of Grassmann algebra and elements of Grassmann--Berezin calculus, we use the expression of Pfaffians as Grassmann integrals to generalize a series of formulas relating generating functions of paths in digraphs to Pfaffians. We start with the celebrated Lindström-Gessel-Viennot formula, which we derive in the general case of a graph with cycles. We then make further use of Grassmann algebraic tools to prove a generalization of the results of (Stembridge 1990). Our results, which are applicable to graphs with cycles, are formulated in terms of systems of nonintersecting paths and nonintersecting cycles in digraphs.
description: 12 pages
Spectral properties of the hierarchical product of graphs
Creators: name: Skardal, Per Sebastian
name: Wash, Kirsti
Publisher: name: arXiv
Year: 2016
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: The hierarchical product of two graphs represents a natural way to build a larger graph out of two smaller graphs with less regular and therefore more heterogeneous structure than the Cartesian product. Here we study the eigenvalue spectrum of the adjacency matrix of the hierarchical product of two graphs. Introducing a coupling parameter describing the relative contribution of each of the two smaller graphs, we perform an asymptotic analysis for the full spectrum of eigenvalues of the adjacency matrix of the hierarchical product. Specifically, we derive the exact limit points for each eigenvalue in the limits of small and large coupling, as well as the leading-order relaxation to these values in terms of the eigenvalues and eigenvectors of the two smaller graphs. Given its central roll in the structural and dynamical properties of networks, we study in detail the Perron-Frobenius, or largest, eigenvalue. Finally, as an example application we use our theory to predict the epidemic threshold of the Susceptible-Infected-Susceptible model on a hierarchical product of two graphs.
Entrepreneurial Orientation of Rural Women Engaged in Micro and Small Enterprises in the Case of Walmara Woreda
Creators: name: Fekede, Mosisa
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: This study was designed to assess the entrepreneurial orientation of rural women engaged in Micro and Small Enterprises sector. The study has examined the business operators' motivational factors, opportunity and challenges during start up and growth, awareness of Women entrepreneur those engaged in micro and small enterprises the policy involved in Micro and Small Enterprises in Walmara Woreda. Data on motivation, opportunity and challenges faced women and their awareness on policy issues were collected from 53 business women by questionnaire and from 3 head of the MSES by interview those were randomly chosen from MSE firms. Data has been collected through questionnaires, interview and observation. After the data has been collected, it was analyzed using simple statistical techniques (frequency and percentages). Women in this study were motivated to start their own business by both pull and push factors, such as the need for independence, the desire to be self-employed, support their family and self-achievement. They are currently facing obstacles, such as lack of working space, lack of working capital and lack of credit facilities. Estimation results of the descriptive analysis indicated that having prior business experience together with good educational background led to acquaintance with entrepreneurial orientation that can be used to enhance radical innovation, pro-activeness and risk taking behavior in micro and small enterprises. It is hoped that the findings of this study discussed here can benefit the business women, other researchers and important parties in the field of entrepreneurship or other support programmes. The study concludes that risk taking, innovation and pro-activeness have relationship with women entrepreneurship orientation in the study area. Finally this study also concludes that EO is a multidimensional activities and that these dimensions vary independently. Based on the major findings, these recommendations were forwarded: there should be capacity building for women entrepreneur; there should be family support for them and building awareness of women entrepreneurs.
Elke Holst: Die Stille Reserve am Arbeitsmarkt. Größe - Zusammensetzung - Verhalten, Berlin: edition sigma, 2000, ISBN 3-89404-476-4, 319 S., DM 39,-, Euro 19,90
Creators: name: Fuchs, Johann
Publisher: name: Lucius & Lucius Verlagsgesellschaft
Year: 2011
Subjects: subject: 300
subject: 650

description: Arbeit
Time quasi-periodic vortex patches of Euler equation in the plane
Creators: name: Berti, Massimiliano
name: Hassainia, Zineb
name: Masmoudi, Nader
Publisher: name: arXiv
Year: 2022
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the existence of time quasi-periodic vortex patch solutions of the 2$d$-Euler equations in $\mathbb{R}^2$, close to uniformly rotating Kirchhoff elliptical vortices, with aspect ratios belonging to a set of asymptotically full Lebesgue measure. The problem is reformulated into a quasi-linear Hamiltonian equation for a radial displacement from the ellipse. A major difficulty of the KAM proof is the presence of a zero normal mode frequency, which is due to the conservation of the angular momentum. The key novelty to overcome this degeneracy is to perform a perturbative symplectic reduction of the angular momentum, introducing it as a symplectic variable in the spirit of the Darboux-Carathéodory theorem of symplectic rectification, valid in finite dimension. This approach is particularly delicate in a infinite dimensional phase space: our symplectic change of variables is a nonlinear modification of the transport flow generated by the angular momentum itself. This is the first time such an idea is implemented in KAM for PDEs. Other difficulties are the lack of rotational symmetry of the equation and the presence of hyperbolic/elliptic normal modes. The latter difficulties -- as well as the degeneracy of a normal frequency -- are absent in other vortex patches problems which have been recently studied using the formulation introduced in this paper.
description: 88 pages
Wilfried Glißmann, Klaus Peters: mehr Druck durch mehr Freiheit. Die neue Autonomie in der Arbeit und ihre paradoxen Folgen, Hamburg: VSA-Verlag, 2001, ISBN 3-87975-811-5, 200 S., DM 29,80, Euro 15,30
Creators: name: Ballauf, Helga
Publisher: name: Lucius & Lucius Verlagsgesellschaft
Year: 2011
Subjects: subject: 300
subject: 650

description: Arbeit
Faux real : a visual exploration into the fashioning of fame through photography
Creators: name: McVeigh, Melissa.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Non-zero $θ_{13}$ with Unbroken $μ-τ$ Symmetry of the Active Neutrino Mass Matrix in the Presence of a Light Sterile Neutrino
Creators: name: Borah, Debasish
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit the possibility of generating non-zero reactor mixing angle in a scenario where there is a sterile neutrino at the eV scale apart from the usual three sub-eV scale active neutrinos. We show that the $3\times3$ active neutrino mass matrix can possess a $μ-τ$ symmetry and can still be consistent with non-zero value of the reactor mixing angle $θ_{13}$, if this $μ-τ$ symmetry is broken in the sterile neutrino sector. We first propose a simple model based on the discrete flavour symmetry $A_4 \times Z_3 \times Z^{\prime}_3$ to realise such a scenario and then numerically evaluate the complete $3+1$ neutrino parameter space that allows such a possibility. We show that, such a possibility of generating non-zero $θ_{13}$ can in general, remain valid even if the present $3+1$ neutrino global fit data get ruled out by future experiments. We also discuss the possible implications at neutrinoless double beta decay $(0νββ)$ experiments in view of the latest results from KamLAND-Zen experiment.
description: 30 pages, 8 figures, to appear in Phys. Rev. D
Code-routing: a new attack on position verification
Creators: name: Cree, Joy
name: May, Alex
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The cryptographic task of position verification attempts to verify one party's location in spacetime by exploiting constraints on quantum information and relativistic causality. A popular verification scheme known as $f$-routing involves requiring the prover to redirect a quantum system based on the value of a Boolean function $f$. Cheating strategies for the $f$-routing scheme require the prover use pre-shared entanglement, and security of the scheme rests on assumptions about how much entanglement a prover can manipulate. Here, we give a new cheating strategy in which the quantum system is encoded into a secret-sharing scheme, and the authorization structure of the secret-sharing scheme is exploited to direct the system appropriately. This strategy completes the $f$-routing task using $O(SP_p(f))$ EPR pairs, where $SP_p(f)$ is the minimal size of a span program over the field $\mathbb{Z}_p$ computing $f$. This shows we can efficiently attack $f$-routing schemes whenever $f$ is in the complexity class $\text{Mod}_p\text{L}$, after allowing for local pre-processing. The best earlier construction achieved the class L, which is believed to be strictly inside of $\text{Mod}_p\text{L}$. We also show that the size of a quantum secret sharing scheme with indicator function $f_I$ upper bounds entanglement cost of $f$-routing on the function $f_I$.
description: 29 pages, v4 adds minor comments
Direct Observation of Surface Alloying and Interface Roughening
Creators: name: Bischoff, M. M. J.
name: Quinn, A. J.
name: Yamada, T.
name: Van Kempen, H.
name: Van Der Kraan, R. G. P.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
The effect of product attributes on consumer purchasing decision: the case of Ethiopian traditional wears in Addis Ababa, Ethiopia
Creators: name: Teshome, Afework
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The research focused on apparel attributes that may affect consumer purchasing decision to Ethiopian traditional fashions in Addis Ababa. Studied variables are the five Apparel attributes Physical apparel attributes, Affective apparel attributes, performance apparel attributes, Aesthtics apparel attributes, Connotative apparel attributes. All responses were collected from all customers and potential customers of traditional fashion in Addis Ababa by using questionnaire through convenience sampling (n=322). Data was analysed to obtain descriptive statistics, normality test, reliability test and comparing mean analysis (i.e. independent t-test and ANOVA) and other analyses (i.e. correlation analysis and multiple linear regressions). According to the findings, four of the apparel attributes were identified as essential for consumer purchasing decision. Connotative apparel attribute has disregarded because fail to attain the reliability standard which 0.7 the result gets 0.647. The researcher recommends that the four apparel attributes are critical in influencing consumers purchasing decision towards Ethiopian traditional fashion so that all parties involved in producing and marketing these products should give a due emphasis for all attributes. However aesthetic attributes had highest effect.
Do nuclear collisions create a locally equilibrated quark-gluon plasma?
Creators: name: Romatschke, Paul
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Experimental results on azimuthal correlations in high energy nuclear collisions (nucleus-nucleus, proton-nucleus and proton-proton) seem to be well described by viscous hydrodynamics. It is often argued that this agreement implies either local thermal equilibrium or at least local isotropy. In this note, I present arguments why this is not the case. Neither local near-equilibrium nor near-isotropy are required in order for hydrodynamics to offer a successful and accurate description of experimental results. However, I predict the breakdown of hydrodynamics at momenta of order seven times the temperature, corresponding to a smallest possible QCD liquid drop size of 0.15 fm.
description: 14 pages, 6 figures; v2: references added, major changes in section VI, qualitative conclusions unchanged; v3: minor typos fixed, matches published version
Implications of the first evidence for coherent elastic scattering of reactor neutrinos
Creators: name: Liao, Jiajun
name: Liu, Hongkai
name: Marfatia, Danny
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recent evidence for coherent elastic neutrino-nucleus scattering (CE$ν$NS) in the NCC-1701 germanium detector using antineutrinos from the Dresden-II nuclear reactor is in good agreement with standard model expectations. However, we show that a $2σ$ improvement in the fit to the data can be achieved if the quenching factor is described by a modified Lindhard model. We also place constraints on the parameter space of a light vector or scalar mediator that couples to neutrinos and quarks, and on a neutrino magnetic moment. We demonstrate that the constraints are quite sensitive to the quenching factor at low recoil energies by comparing constraints for the standard Lindhard model with those by marginalizing over the two parameters of the modified Lindhard model.
description: 5 pages, 3 figures, 1 table. Version to appear as a Letter in PRD
A Resonant Mode for Gravitational Wave Detectors based on Atom Interferometry
Creators: name: Graham, Peter W.
name: Hogan, Jason M.
name: Kasevich, Mark A.
name: Rajendran, Surjeet
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe an atom interferometric gravitational wave detector design that can operate in a resonant mode for increased sensitivity. By oscillating the positions of the atomic wavepackets, this resonant detection mode allows for coherently enhanced, narrow-band sensitivity at target frequencies. The proposed detector is flexible and can be rapidly switched between broadband and narrow-band detection modes. For instance, a binary discovered in broadband mode can subsequently be studied further as the inspiral evolves by using a tailored narrow-band detector response. In addition to functioning like a lock-in amplifier for astrophysical events, the enhanced sensitivity of the resonant approach also opens up the possibility of searching for important cosmological signals, including the stochastic gravitational wave background produced by inflation. We give an example of detector parameters which would allow detection of inflationary gravitational waves down to $Ω_\text{GW} \sim 10^{-14}$ for a two satellite space-based detector.
description: 9 pages, 4 figures
Coset construction of AdS particle dynamics
Creators: name: Heinze, Martin
name: Jorjadze, George
name: Megrelidze, Luka
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 17B08, 53D50, 81S10

description: We analyze dynamics of the AdS$_{N+1}$ particle realized on the coset SO$(2,N)/$SO$(1,N)$. Hamiltonian reduction provides the physical phase space in terms of the coadjoint orbit obtained by boosting a timelike element of ${\frak so}(2,N)$. We show equivalence of this approach to geometric quantization and to the SO$(N)$ covariant oscillator description, for which the boost generators entail a complicated operator ordering. As an alternative scheme, we introduce dual oscillator variables and derive their algebra at the classical and the quantum level. This simplifies the calculations of the commutators for the boost generators and leads to unitary irreducible representations of ${\frak so}(2,N)$ for all admissible values of the mass parameter. We furthermore discuss an SO$(N)$ covariant supersymmetric extensions of the oscillator quantization, with its realization for superparticles in AdS$_2$ and AdS$_3$ given by recent works.
description: 21+1 pages; v2: typos corrected, references updated; v3: minor changes, matches published version
Oxygen Abstraction from Dioxygen on the Al(111) Surface
Creators: name: Binetti, Marcello
name: Komrowski, Andrew J.
name: Kummel, Andrew C.
name: Sexton, Jonathan Z.
name: Weiße, Olaf
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Angular dependence of electron spin resonance for detecting quadrupolar liquid state of frustrated spin chains
Creators: name: Furuya, Shunsuke C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin nematic phase is a phase of frustrated quantum magnets with a quadrupolar order of electron spins. Since the spin nematic order is usually masked in experimentally accessible quantities, it is important to develop a methodology for detecting the spin nematic order experimentally. In this paper we propose a convenient method for detecting quasi-long-range spin nematic correlations of a quadrupolar Tomonaga-Luttinger liquid state of $S=1/2$ frustrated ferromagnetic spin chain compounds, using electron spin resonance (ESR). We focus on linewidth of a so-called paramagnetic resonance peak in ESR absorption spectrum. We show that a characteristic angular dependence of the linewidth on the direction of magnetic field arises in the spin nematic phase. Measurments of the angular dependence give a signature of the quadrupolar Tomonaga-Luttinger liquid state. In our method we change only the direction of the magnetic field, keeping the magnitude of the magnetic field and the temperature. Therefore, our method is advantageous for investigating the one-dimensional quadrupolar liquid phase that usually occupies only a narrow region of the phase diagram.