text stringlengths 1 2.25M |
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---
abstract: 'We analyse the Kantowski-Sachs cosmologies with Vlasov matter of massive and massless particles using dynamical systems analysis. We show that generic solutions are past and future asymptotic to the non-flat locally rotationally symmetric Kasner vacuum solution. Furthermore, we establish that solutions w... |
---
abstract: |
[R]{}ecent advances in telecommunications have enabled surgeons to operate remotely on patients with the use of robotics. The investigation and testing of remote surgery using a robotic arm is presented. The robotic arm is designed to have four degrees of freedom that track the [surgeon’s]{} $x,~y,~... |
---
abstract: 'We develop a Lie algebraic approach to systematically calculate the evolution operator of the generalized two-dimensional quadratic Hamiltonian with time-dependent coefficients. Although the development of the Lie algebraic approach presented here is mainly motivated by the two-dimensional quadratic Hami... |
---
abstract: 'We report the results of CCD photometric observations in the direction of the Coma Berenices and Upgren 1 open clusters with the aim at searching for new short-period variable stars. A total of 35 stars were checked for variability. As a result of this search the star designated in the SIMBAD database as... |
---
author:
- Kohei Kumazaki
- ', Shuichiro Yokoyama'
- and Naoshi Sugiyama
title: Fine Features in the Primordial Power Spectrum
---
Introduction
============
Inflation has been the focus of attention as a successful scenario which gives not only a natural understanding of initial conditions of the standard Big Bang... |
---
address: |
Department of Mathematics, Ivan Franko Lviv National University\
Universytetska 1, Lviv, Ukraine
author:
- Olexandr Ravsky
title: A NEW MEASURE OF ASYMMETRY OF BINARY WORDS
---
notation.tex
\[The\][Lemma]{} \[The\][Corollary]{}
In this paper under the term word we shall understood the binary w... |
---
abstract: 'We present a construction of subspace codes along with an efficient algorithm for list decoding from both insertions and deletions, handling an information-theoretically maximum fraction of these with polynomially small rate. Our construction is based on a variant of the folded Reed-Solomon codes in the ... |
---
abstract: 'The non-asymptotic tail bounds of random variables play crucial roles in probability, statistics, and machine learning. Despite much success in developing upper tail bounds in literature, the lower tail bound results are relatively fewer. In this partly expository paper, we introduce systematic and user-... |
---
abstract: 'The 10$^{51}$ ergs released in a supernova have far reaching consequences in the galaxy, determining elemental abundances, accelerating cosmic rays, and affecting the makeup of the interstellar medium. Recently the spectra of several supernova remnants have been found to be dominated by nonthermal emissi... |
---
abstract: 'We study the resolution of certain cosmological singularity in the context of higher-spin three-dimensional gravity. We consider gravity coupled to a spin-3 field realized as Chern-Simons theory with gauge group $SL(3,\mathbb{C})$. In this context we elaborate and extend a singularity resolution scheme p... |
---
abstract: 'The long-slit spectra obtained along the minor axis, offset major axis and diagonal axis are presented for 12 E and S0 galaxies of the Coma cluster drawn from a magnitude-limited sample studied before. The rotation curves, velocity dispersion profiles and the $H_3$ and $H_4$ coefficients of the Hermite d... |
---
abstract: 'A classification algorithm that combines the components of k-nearest neighbours and multilayer neural networks has been designed and tested. With this method the computational time required for training the dataset has been reduced substancially. Gabor filters were used for the feature extraction to ensu... |
---
abstract: 'In his 2005 paper, S.T. Smith proposed an intrinsic Cramér-Rao bound on the variance of estimators of a parameter defined on a Riemannian manifold. In the present technical note, we consider the special case where the parameter lives in a Lie group. In this case, by choosing ,e.g., the right invariant me... |
---
abstract: 'The multidimensional gravity on the principal bundle with the [SU]{}(2) gauge group is considered. The numerical investigation of the spherically symmetric metrics with the center of symmetry is made. The solution of the gravitational equations depends on the boundary conditions of the “SU(2) gauge poten... |
---
abstract: |
A characterization of module alphabets with the Hamming weight EP (abbreviation for Extension Property) had been settled. A thoughtfully constructed piece-of-art example by J.A.Wood ([@r6]) finished the tour. In 2009, in [@r7], Frobenius bimodules were proved to satisfy the EP with respect to *symme... |
---
abstract: 'Let $F \subset {\mathbb{R}}^{2}$, and let ${\dim_{\textsc{A}}}$ stand for Assouad dimension. I prove that $${\dim_{\textsc{A}}}\pi_{e}(F) \geq \min\{{\dim_{\textsc{A}}}F,1\}$$ for all $e \in S^{1}$ outside of a set of Hausdorff dimension zero. This is a strong variant of Marstrand’s projection theorem fo... |
---
abstract: 'This paper studies structural aspects of lattice path matroids, a class of transversal matroids that is closed under taking minors and duals. Among the basic topics treated are direct sums, duals, minors, circuits, and connected flats. One of the main results is a characterization of lattice path matroid... |
---
abstract: 'We present a general class of natural theories in which the Higgs is a pseudo-goldstone boson in an orbifolded gauge theory. The symmetry protecting the Higgs at low energies is an accidental global symmetry of the quadratic action, rather than a full continuous symmetry. The lightest degrees of freedom ... |
---
abstract: 'The interplay between shear and bulk viscosities on the flow harmonics, $v_n$’s, at RHIC is investigated using the newly developed relativistic 2+1 hydrodynamical code v-USPhydro that includes bulk and shear viscosity effects both in the hydrodynamic evolution and also at freeze-out. While shear viscosit... |
22.5cm 16.5cm =-2cm -.5cm
.3in
.2in [**Anirban Chakraborti**]{}$~^{(1)}$ and [**Bikas K. Chakrabarti**]{}$~^{(2)}$\
[*Saha Institute of Nuclear Physics*]{},\
[*1/AF Bidhan Nagar, Calcutta 700 064, India.*]{}\
.3in [**Abstract**]{}\
We consider a simple model of a closed economic system where the total money is conse... |
---
abstract: 'Photon-induced reactions play a key role in the nucleosynthesis of rare neutron-deficient [$p$-nuclei]{}. The paper focuses on [($\gamma$,$\alpha$)]{}, [($\gamma$,p)]{}, and [($\gamma$,n)]{} reactions which define the corresponding [$p$-process]{} path. The relation between stellar reaction rates and lab... |
---
abstract: |
We present an interesting Sunyaev–Zel’dovich (SZ) detection in the first of the Arcminute Microkelvin Imager (AMI) ‘blind’, degree-square fields to have been observed down to our target sensitivity of $100 \mu \rm{Jy} /beam$. In follow-up deep pointed observations the SZ effect is detected with a ma... |
---
author:
- 'R. Fedriani'
- 'A. Caratti o Garatti'
- 'D. Coffey'
- 'R. Garcia Lopez'
- 'S. Kraus'
- 'G. Weigelt'
- 'B. Stecklum'
- 'T.P. Ray'
- 'C. M. Walmsley[^1]'
bibliography:
- 'phd\_bibliography.bib'
date: 'Received 27 October 2017 / Accepted 23 May 2018'
subtitle: 'Connecting the au- and the parsec-scale jet in... |
---
abstract: 'The Orphan Stream is one of the most prominent tidal streams in the Galactic halo. Using data on red giants, RR Lyrae, and horizontal branch stars from [[*Gaia*]{}]{} and other surveys, we determine the proper motion of the Orphan Stream over a path of more than $90 {\degr}$ on the sky. We also provide u... |
---
abstract: 'Integro-differential methods, currently exploited in calculus, provide an inexhaustible source of tools to be applied to a wide class of problems, involving the theory of special functions and other subjects. The use of integral transforms of the Borel type and the associated formalism is shown to be a v... |
---
abstract: '[A search for a massive gauge boson decaying to a top quark and a bottom quark is performed with the ATLAS detector in $pp$ collisions at the LHC. The dataset was taken at a centre-of-mass energy of $\sqrt{s} = 8\tev$ and corresponds to $20.3\;\ifb$ of integrated luminosity. This analysis is done in the... |
---
abstract: 'In the present paper we extend and improve the results of [@bl; @br] for the tensor square of Lie algebras. More precisely, for any Lie algebra $L$ with $L/L^2$ of finite dimension, we prove $L\otimes L\cong L\square L\oplus L\wedge L$ and $Z^{\wedge}(L)\cap L^2=Z^{\otimes}(L)$. Moreover, we show that $L... |
---
author:
- 'B. Godard , G. Pineau des Forêts , P. Lesaffre , A. Lehmann , A. Gusdorf ,'
- 'E. Falgarone'
bibliography:
- 'mybib.bib'
date: 'Received 14 September 2018 / Accepted 20 November 2018'
title: Models of irradiated molecular shocks
---
Introduction
============
The interstellar medium would be a nice, qui... |
---
author:
- 'Jiaxin Han, Carlos S. Frenk, Vincent R. Eke, Liang Gao and Simon D. M. White'
title: 'Evidence for extended gamma-ray emission from galaxy clusters'
---
|
---
abstract: 'Bose-Einstein condensation, the macroscopic occupation of a single quantum state, appears in equilibrium quantum statistical mechanics and persists also in the hydrodynamic regime close to equilibrium. Here we show that even when a degenerate Bose gas is driven into a steady state far from equilibrium, w... |
---
abstract: |
We report the discovery of water maser emission in five active galactic nuclei (AGN) with the 100-m Green Bank Telescope (GBT). The positions of the newly discovered masers, measured with the VLA, are consistent with the optical positions of the host nuclei to within $1\sigma$ ($0\rlap{.}''3$ radio ... |
---
abstract: |
We discuss the short and long term perspectives of the CRESST (Cryogenic Rare Event Search using Superconducting Thermometers) project and present the current status of the experiment and new results concerning detector development. In the search for elementary particle dark matter, CRESST is presen... |
---
abstract: 'The ability of neural networks to capture relational knowledge is a matter of long-standing controversy. Recently, some researchers in the PDP side of the debate have argued that (1) classic PDP models can handle relational structure [@rogers2008precis; @rogers2014parallel] and (2) the success of deep le... |
---
abstract: 'We describe the expected distribution of intensity for a scintillating source of finite size observed through a scattering medium, including systematic and instrumental effects. We describe measurements of the size of the Vela pulsar, using this technique.'
author:
- 'C.R. Gwinn'
- 'J.E. Reynolds, D.L. J... |
---
abstract: |
Goal-Oriented (GO) Dialogue Systems, colloquially known as goal oriented chatbots, help users achieve a predefined goal (e.g. book a movie ticket) within a closed domain. A first step is to understand the user’s goal by using natural language understanding techniques. Once the goal is known, the bot... |
---
abstract: 'We present numerical calculations of the snake instability in a Fermi superfluid within the Bogoliubov-de Gennes theory of the BEC to BCS crossover using the random phase approximation complemented by time-dependent simulations. We examine the snaking behaviour across the crossover and quantify the times... |
---
abstract: 'Topological insulators are materials that conduct on the surface and insulate in their interior due to non-trivial topological order. The edge states on the interface between topological (non-trivial) and conventional (trivial) insulators are topologically protected from scattering due to structural defe... |
---
abstract: |
It is suggested that the vacuum expectation of the quantum vacuum energy-momentum is zero, but quantum fluctuations give rise to a space-time curvature equivalent to that of a cosmological constant or dark energy. Calculations within quantized gravity, following a few plausible hypotheses, provide r... |
---
abstract: 'Using elementary geometric methods we prove the isomorphism of the little Lorentz group for light-like momentum and the group of motions of a Euclidian plane. In accordance with Jordan-Hölder-Noether theorem we perform “reduction” or the real and complex vector representations of this group. We also prov... |
---
abstract: 'We introduce neural networks for end-to-end differentiable proving of queries to knowledge bases by operating on dense vector representations of symbols. These neural networks are constructed recursively by taking inspiration from the backward chaining algorithm as used in Prolog. Specifically, we replac... |
---
abstract: 'We have examined the physical conditions within a bright emission-line knot in the inner narrow-line region (NLR) of the Seyfert 2 galaxy Mrk 573 using optical spectra and photoionization models. The spectra were obtained with the [*Hubble Space Telescope*]{}/Space Telescope Imaging Spectrograph, through... |
---
abstract: 'Time-dependent quantities are calculated in the linear response limit for a correlated one dimensional model atom driven by an external quadrupolar time-dependent field. Besides the analysis of the time-evolving energy change in the correlated two-particle system, and orthogonality of initial and final s... |
---
abstract: 'Cosmological and astrophysical measurements provide powerful constraints on neutrino masses complementary to those from accelerators and reactors. Here we provide a guide to these different probes, for each explaining its physical basis, underlying assumptions, current and future reach.'
author:
- 'K. N.... |
---
abstract: |
The one–loop contribution of the two CP–violating components of the $WW\gamma$ vertex, $ \tilde{\kappa}_\gamma W^+_\mu W^-_\nu
\tilde{F}^{\mu \nu}$ and $(\tilde{\lambda}_\gamma / m^2_W)W^+_{\mu
\nu}W^{-\nu}_{\ \ \rho}\tilde{F}^{\rho \mu}$, on the electric dipole moment (EDM) of fermions is c... |
---
author:
- Arman Darbinyan
title: Group Embeddings with Algorithmic Properties
---
[^1]
Abstract
========
We show that every countable group $H$ with solvable word problem can be subnormally embedded into a 2-generated group $G$ which also has solvable word problem. Moreover, the membership problem for $H<G$ is a... |
---
abstract: 'In this work we consider black holes surrounded by anisotropic fluids in four dimensions. We first study the causal structure of these solutions showing some similarities and differences with Reissner-Nordström-de Sitter black holes. In addition, we consider scalar perturbations on this background geomet... |
---
abstract: 'We study effects of the Coulomb repulsion on the electron-phonon interaction (EPI) in a model of cuprates at zero and finite doping. We find that antiferromagnetic correlations strongly enhance EPI effects on the electron Green’s function with respect to the paramagnetic correlated system, but the net ef... |
---
author:
- Pierre de Buyl
bibliography:
- 'books.bib'
- 'confs.bib'
- 'these.bib'
title: 'Vlasov dynamics of 1D models with long-range interactions'
---
[Universit[é]{} Libre de Bruxelles\
Center for Nonlinear Phenomena and Complex Systems]{}
------------------------------------------------------------------------... |
---
abstract: 'We show how a single trapped ion may be used to test a variety of important physical models realized as time-dependent harmonic oscillators. The ion itself functions as its own motional detector through laser-induced electronic transitions. Alsing [*et al.*]{} \[Phys. Rev. Lett. [**94**]{}, 220401 (2005)... |
---
abstract: 'We apply the dynamical approach to the study of the second order semi-linear elliptic boundary value problem in a cylindrical domain with a small parameter $\eb$ at the second derivative with respect to the variable $t$ corresponding to the axis of the cylinder. We prove that, under natural assumptions o... |
---
abstract: 'The classical Gaussian functor associates to every orthogonal representation of a locally compact group $G$ a probability measure preserving action of $G$ called a Gaussian action. In this paper, we generalize this construction by associating to every affine isometric action of $G$ on a Hilbert space, a ... |
---
abstract: 'Let $X$ be a compact Kähler manifold of dimension three. We prove that there exists a projective manifold $Y$ such that $\pi_1(X) \simeq \pi_1(Y)$. We also prove the bimeromorphic existence of algebraic approximations for compact Kähler manifolds of algebraic dimension $\dim X-1$. Together with the work ... |
---
abstract: 'The immersed boundary (IB) method is a widely used approach to simulating fluid-structure interaction (FSI). Although explicit versions of the IB method can suffer from severe time step size restrictions, these methods remain popular because of their simplicity and generality. In prior work [@RDGuy15-gmg... |
---
abstract: |
In a recent paper [@unterkofler2015] we presented a simple two compartment model which describes the influence of inhaled concentrations on exhaled breath concentrations for volatile organic compounds (VOCs) with small Henry constants.
In this paper we extend this investigation concerning the i... |
---
abstract: 'I review, from an observational perspective, the interactions of accretion discs with magnetic fields in cataclysmic variable stars. I start with systems where the accretion flows via a stream, and discuss the circumstances in which the stream forms into an accretion disc, pointing to stars which are clo... |
---
abstract: 'Discrete tomography deals with reconstructing finite spatial objects from their projections. The objects we study in this paper are called tilings or tile-packings, and they consist of a number of disjoint copies of a fixed tile, where a tile is defined as a connected set of grid points. A row projection... |
---
abstract: 'Precise predictions of the antineutrino spectra emitted by nuclear reactors is a key ingredient in measurements of reactor neutrino oscillations as well as of the recent applications to the surveillance of power plants in the context of non proliferation of nuclear weapons. We report new calculations inc... |
---
abstract: 'Nanopositioning techniques currently applied to characterize physical properties of materials interesting for applications at the microscopic scale rely on high-voltage electronic control circuits that should have the lowest possible noise level. Here we introduce a simple, flexible, and custom-built pow... |
---
abstract: 'Phononic wire waveguides of subwavelength cross-section support two orthogonal polarization modes: the out-of-plane motion dominated Rayleigh-like and the in-plane motion dominated Love-like modes, analogous to transverse-electric and transverse-magnetic modes in photonic waveguides. Due to the anisotrop... |
---
abstract: 'This note is based on a series of lectures delivered in Kyoto University. This note surveys the homogeneous Besov space $\dot{B}^s_{pq}$ on ${\mathbb R}^n$ with $1 \le p,q \le \infty$ and $s \in {\mathbb R}$ in a rather self-contained manner. Possible extensions of this type of function spaces are breifl... |
---
abstract: 'The self-adjoint and $m$-sectorial extensions of coercive Sturm-Liouville operators are characterised, under minimal smoothness conditions on the coefficients of the differential expression.'
author:
- |
B M Brown\
Cardiff School of Computer Science & Informatics,\
Cardiff University, Cardiff... |
---
abstract: 'Monte Carlo generators which were tuned for energies up to that of the Tevatron, are found wanting when extended to LHC energies. We construct a model that satisfies the theoretical requisites of high energy soft interactions, based on two conjectures: (i) the results of the Ads/CDF correspondence for N ... |
---
abstract: 'We have studied the measurement accuracy of the forward-backward asymmetry of the $e^+e^- \rightarrow t\bar{t}$ process in the 6-jet mode at $\sqrt{s} = 500$ GeV with the ILD detector. In the analysis the vertex charges of $b$-jets were used to distinguish $t$ from $\bar{t}$ in each event. The distributi... |
---
abstract: 'Solar flare emission at X-ray and extreme ultraviolet (EUV) energies can cause substantial enhancements in the electron density in the Earth’s lower ionosphere. It has now become clear that flares exhibit quasi-periodic pulsations with timescales of minutes at X-ray energies, but to date, it has not been... |
---
abstract: 'In this work we introduce the Rytov approximation in the scope of high-energy electron scattering with the motivation of developing better linear models for electron scattering. Such linear models play an important role in tomography and similar reconstruction techniques. Conventional linear models, such... |
---
abstract: 'In this paper, we consider a reduction of a new system of partial difference equations, which was obtained in our previous paper[@JN2019:arxiv1906.06650] and shown to be consistent around a cuboctahedron. We show that this system reduces to $A_2^{(1)\ast}$-type discrete Painlevé equations by considering ... |
---
abstract: |
The Tammes problem is to find the arrangement of $N$ points on a unit sphere which maximizes the minimum distance between any two points. This problem is presently solved for several values of $N$, namely for $N=3,4,6,12$ by L. Fejes Tóth (1943); for $N=5,7,8,9$ by Schütte and van der Waerden (1951)... |
---
abstract: 'In this paper, a multiscale virtual particle based elastic network model (MVP-ENM) is proposed for biomolecular normal mode analysis. The multiscale virtual particle model is proposed for the discretization of biomolecular density data in different scales. Essentially, the model works as the coarse-grain... |
---
abstract: 'Рассмотрим пятиточечную эллиптическую дискретизацию двумерного конечнозонного при одной энергии оператора Шредингера. Мы строим для него функцию Грина в виде явной формулы в терминах интеграла по специальному контуру на спектральной кривой от дифференциала, построенного по волновой функции и двойственной... |
---
abstract: 'A combined mid-IR spectrum of five colliding-wind, massive, dust-producing Population I Wolf-Rayet (WR) binaries shows a wealth of absorption and emission details coming from the circumstellar dust envelopes, as well as from the interstellar medium. The prominent absorption features may arise from a mix ... |
---
abstract: |
The symmetry of the superconducting phase of Sr$_2$RuO$_4$ is identified as the odd-parity pairing state $ {\bf d} ({\bf k}) = \hat{{\bf z}} (k_x
\pm i k_y) $ based on recent experiments. The experimental evidence for the so-called orbital dependent superconductivity leads to a single-band descr... |
---
author:
- |
Hansenclever F. Bassani\
CIn, Universidade Federal de Pernambuco\
Recife, PE, Brazil, 50.740-560\
`hfb@cin.ufpe.br`\
Renie A. Delgado\
CIn, Universidade Federal de Pernambuco\
Recife, PE, Brazil, 50.740-560\
`rad@cin.ufpe.br`\
José Nilton de O. Lima Junior\
CIn, U... |
---
abstract: |
We prove that there is an absolute constant $c>0$ with the following property: if ${{\mathbb Z}}/p{{\mathbb Z}}$ denotes the group of prime order $p$, and a subset $A\subset {{\mathbb Z}}/p{{\mathbb Z}}$ satisfies $1<|A|<p/2$, then for any positive integer $m<\min\{c|A|/\ln|A|, \sqrt{p/8}\}$ there a... |
---
abstract: 'We consider a fractional order viscoelasticity problem modelled by a *power-law* type stress relaxation function. This viscoelastic problem is a Volterra integral equation of the second kind with a weakly singular kernel where the convolution integral corresponds to fractional order differentiation/integ... |
---
abstract: 'We apply a fast kernel method for mask-based single-channel speech enhancement. Specifically, our method solves a kernel regression problem associated to a non-smooth kernel function (exponential power kernel) with a highly efficient iterative method (EigenPro). Due to the simplicity of this method, its ... |
---
abstract: |
The ultraluminous broad absorption line quasar APM08279+5255 is one of the most luminous systems known. Here, we present an analysis of its nuclear CO(1-0) emission. Its extended distribution suggests that the gravitational lens in this system is highly elliptical, probably a highly inclined disk. T... |
---
abstract: |
In this paper, we consider the problem of maximizing the expected discounted utility of dividend payments for an insurance company that controls risk exposure by purchasing proportional reinsurance. We assume the preference of the insurer is of CRRA form. By solving the corresponding Hamilton-Jacobi... |
---
author:
- 'Alan R. Parry'
bibliography:
- 'References.bib'
date: 2013
title: Wave Dark Matter and Dwarf Spheroidal Galaxies
---
|
---
abstract: |
[PSR J1024$-$0719]{} is a millisecond pulsar that was long thought to be isolated. However, puzzling results concerning its velocity, distance, and low rotational period derivative have led to reexamination of its properties. We present updated radio timing observations along with new and archival o... |
---
abstract: 'Remarkable nonlinearities in the differential tunneling conductance between fractional quantum Hall edge states at a constriction are observed in the weak-backscattering regime. In the $\nu $ = 1/3 state a peak develops as temperature is increased and its width is determined by the fractional charge. In ... |
---
abstract: 'Non-equilibrium Green’s functions calculations based on density functional theory show a direct link between the initial stages of H$_2$ dissociation on a gold atomic wire and the electronic current supported by the gold wire. The simulations reveal that for biases below the stability threshold of the wi... |
---
abstract:
- 'Dans [@CT] la biquantification des paires symétriques a été étudié à l’aide du formalisme graphique de M. Kontsevich. Dans ce papier on corrige, compte tenu des résultats montrés récemment dans [@CFFR], une erreur mineure dans [@CT], qui en tout cas n’invalide pas les résultats plus importants dans [@C... |
---
abstract: 'In this work we use a framework of finite-state automata constructions based on equivalences over words to provide new insights on the relation between well-known methods for computing the minimal deterministic automaton of a language.'
author:
- Pierre Ganty
- Elena Gutiérrez
- Pedro Valero
title: 'A Co... |
---
abstract: 'We discuss the quasiclassical Green function method for a two-dimensional electron gas in the presence of spin-orbit coupling, with emphasis on the meaning of the $\xi$-integration procedure. As an application of our approach, we demonstrate how the spin-Hall conductivity, in the presence of spin-flip sc... |
---
abstract: 'We present results of resistance fluctuation spectroscopy on single crystals of the predicted Kondo topological insulator material SmB$_6$. Our measurements show that at low temperatures, transport in this system takes place only through surface states. The measured noise in this temperature range arises... |
---
abstract: |
Many expensive black-box optimisation problems are sensitive to their inputs. In these problems it makes more sense to locate a region of good designs, than a single, possibly fragile, optimal design.
Expensive black-box functions can be optimised effectively with Bayesian optimisation, where a... |
---
abstract: 'A summary of various measurements of the mean matter density in the universe, $\Omega_m$, is presented. Results from very different kinds of methods using various astronomical objects – from supernovae to large-scale structure – are shown. There is a remarkable preference for $\Omega_m$ values around 0.3... |
---
abstract: 'The classical Landau-Lifshitz equation has been derived from quantum mechanics. Starting point is the assumption of a non-Hermitian Hamilton operator to take the energy dissipation into account. The corresponding quantum mechanical time dependent Schrödinger, Liouville and Heisenberg equation have been d... |
---
abstract: 'We show that the density and temperature dependences of the $\alpha$-relaxation time of several glassforming polymers can be described through a single scaling variable $X=e(\rho)/T$, where $e(\rho)$ is well fitted by a power law $\rho^x$, $x$ being a species-specific parameter. This implies that “fragil... |
---
abstract: |
The knowledge of the contribution $b_d(d)$ to the artificial sky luminance in a given point of the sky of a site produced by the sources beyond a given distance $d$ from it is important to understand the behaviour of light pollution in diffusely urbanized areas and to estimate which fraction of the ... |
---
abstract: 'We analyze electron spin relaxation in electronic transport through coherently coupled double quantum dots in the spin blockade regime. In particular, we focus on hyperfine interaction as the spin relaxation mechanism. We pay special attention to the effect of the dynamical nuclear spin polarization indu... |
---
abstract: 'With increasing renewable penetration in power systems, a prominent challenge in the efficient and reliable power system operation is handling the uncertainties inherent in the renewable [generation]{}. In this paper, we propose a simple two-settlement market mechanism in which renewable power producers ... |
---
abstract: |
We study the low-regularity (in-)extendibility of spacetimes within the synthetic-geometric framework of Lorentzian length spaces developed in [@KS:17]. To this end, we introduce appropriate notions of geodesics and timelike geodesic completeness and prove a general inextendibility result. Our resul... |
---
abstract: 'Let $B$ be a block of a finite group with respect to an algebraically closed field $F$ of characteristic $p>0$. In a recent paper, Otokita gave an upper bound for the Loewy length $LL(ZB)$ of the center $ZB$ of $B$ in terms of a defect group $D$ of $B$. We refine his methods in order to prove the optimal... |
---
abstract: 'The large cross-section of the line makes it a sensitive probe of the ionization state of the intergalactic medium (IGM). Here we present the most complete study to date of the IGM opacity, and its application to the redshift evolution of the ’ fraction’, i.e. the fraction of color-selected galaxies wi... |
---
abstract: 'Training deep networks is a time-consuming process, with networks for object recognition often requiring multiple days to train. For this reason, leveraging the resources of a cluster to speed up training is an important area of work. However, widely-popular batch-processing computational frameworks like... |
---
abstract: 'It was recently shown that dielectronic recombination measurements can be used for accurately inferring changes in the nuclear mean-square charge radii of highly-charged lithium-like neodymium \[Brandau , *Phys. Rev. Lett.* 100 073201 (2008)\]. To make use of this method to derive information about the n... |
---
abstract: 'We provide a simple framework for the synthesis of quantum circuits based on a numerical optimization algorithm. This algorithm is used in the context of the trapped-ions technology. We derive theoretical lower bounds for the number of quantum gates required to implement any quantum algorithm. Then we pr... |
---
abstract: 'We present a renormalized second-order perturbation theory (rPT2), based on a Kohn-Sham (KS) reference state, for the electron correlation energy that includes the random-phase approximation (RPA), second-order screened exchange (SOSEX), and renormalized single excitations (rSE). These three terms all in... |
---
abstract: 'Trends in the planet population with host star mass provide an avenue to constrain planet formation theories. We derive the planet radius distribution function for Kepler stars of different spectral types, sampling a range in host star masses. We find that M dwarf stars have 3.5 times more small planets ... |
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