Chiral properties of (2+1)-flavor QCD in strong magnetic fields at zero temperatureWe present lattice QCD results for masses and magnetic polarizabilities of light and strange pseudoscalar mesons, chiral condensates, decay constants of neutral pion, and neutral kaon in the presence…H. -T. Ding, S. -T. Li, A. Tomiya et al.·Aug 2, 2020SaveLearn
Bethe-Salpeter amplitudes of UpsilonsBased on lattice non-relativistic QCD (NRQCD) studies we present results for Bethe-Salpeter amplitudes for (1S), (2S) and (3S) in vacuum as well as in quark-gluon…Rasmus Larsen, Stefan Meinel, Swagato Mukherjee et al.·Jul 31, 2020SaveLearn
Equivalence of relativistic three-particle quantization conditionsWe show that a recently derived alternative form of the relativistic three-particle quantization condition for identical particles can be rewritten in terms of the R matrix introduced to give a…Tyler D. Blanton, Stephen R. Sharpe·Jul 31, 2020SaveLearn
Alternative derivation of the relativistic three-particle quantization conditionWe present a simplified derivation of the relativistic three-particle quantization condition for identical, spinless particles described by a generic relativistic field theory satisfying a $…Tyler D. Blanton, Stephen R. Sharpe·Jul 31, 2020SaveLearn
Nucleon Gluon Distribution Function from 2+1+1-Flavor Lattice QCDThe parton distribution functions (PDFs) provide process-independent information about the quarks and gluons inside hadrons. Although the gluon PDF can be obtained from a global fit to experimental…Zhouyou Fan, Rui Zhang, Huey-Wen Lin·Jul 31, 2020SaveLearn
Two-neutrino double-beta decay in pionless effective field theory from a Euclidean finite-volume correlation functionTwo-neutrino double-beta decay of certain nuclear isotopes is one of the rarest Standard Model processes observed in nature. Its neutrinoless counterpart is an exotic lepton-number nonconserving…Zohreh Davoudi, Saurabh V. Kadam·Jul 30, 2020SaveLearn
Strangeonium-like hybrids on the latticeThe strangeonium-like ssg hybrids are investigated from lattice QCD in the quenched approximation. In the Coulomb gauge, spatially extended operators are constructed for 1-- and…Yunheng Ma, Ying Chen, Ming Gong et al.·Jul 29, 2020SaveLearn
Monte Carlo Simulations of BFSS and IKKT Matrix ModelsIn this thesis, we studied the bosonic BFSS and IKKT matrix models using Monte Carlo simulations. First, we explored some toy models to check the validity of the numerical simulations. Then we…Nikhil Tanwar·Jul 29, 2020SaveLearn
Parton distribution functions from lattice QCD using Bayes-Gauss-Fourier transformsWe present a new method, based on Gaussian process regression, for reconstructing the continuous x-dependence of parton distribution functions (PDFs) from quasi-PDFs computed using lattice QCD. We…Constantia Alexandrou, Giovanni Iannelli, Karl Jansen et al.·Jul 27, 2020SaveLearn
An analysis of systematic effects in finite size scaling studies using the gradient flowWe propose a new strategy for the determination of the step scaling function σ(u) in finite size scaling studies using the Gradient Flow. In this approach the determination of σ(u) is…Alessandro Nada, Alberto Ramos·Jul 25, 2020SaveLearn
Modeling few-body resonances in finite volumeUnder the assumption of separable interactions, we illustrate how the few-body quantization condition may be formulated in terms of phase shifts in general, which may be useful for describing and…Peng Guo·Jul 24, 2020SaveLearn
Simulating 2+1d Z3 lattice gauge theory with iPEPSWe simulate a zero-temperature pure Z3 Lattice Gauge Theory in 2+1 dimensions by using an iPEPS (Infinite Projected Entangled-Pair State) ansatz for the ground state. Our results are…Daniel Robaina, Mari Carmen Bañuls, J. Ignacio Cirac·Jul 22, 2020SaveLearn
Excitations of elementary fermions in gauge Higgs theoriesStatic quark-antiquark states in QCD, at finite quark separation, have a spectrum of metastable states corresponding to string-like excitations of the gauge field. In this article I suggest that…Jeff Greensite·Jul 22, 2020SaveLearn
A finite box as a tool to distinguish free quarks from confinement at high temperaturesAbove the pseudocritical temperature Tc of chiral symmetry restoration a chiral spin symmetry (a symmetry of the color charge and of electric confinement) emerges in QCD. This implies that QCD is in…L. Ya. Glozman, C. B. Lang·Jul 21, 2020SaveLearn
Visualizing resonances in finite volumeIn present work, we explore and experiment an alternative approach of studying resonance properties in finite volume. By analytic continuing finite lattice size L into complex plane, the…Peng Guo, Bingwei Long·Jul 21, 2020SaveLearn
Lattice QCD constraints on the heavy quark diffusion coefficientWe report progress towards computing the heavy quark momentum diffusion coefficient from the correlator of two chromo-electric fields attached to a Polyakov loop in pure SU(3) gauge theory. Using a…Nora Brambilla, Viljami Leino, Peter Petreczky et al.·Jul 20, 2020SaveLearn
Complex Langevin calculations in QCD at finite densityWe demonstrate that the complex Langevin method (CLM) enables calculations in QCD at finite density in a parameter regime in which conventional methods, such as the density of states method and the…Yuta Ito, Hideo Matsufuru, Yusuke Namekawa et al.·Jul 17, 2020SaveLearn
Baryons in the Gross-Neveu model in 1+1 dimensions at finite number of flavorsIn a recent work we studied the phase structure of the Gross-Neveu (GN) model in 1+1 dimensions at finite number of fermion flavors Nf = 2, 8, 16, finite temperature and finite chemical…Julian J. Lenz, Laurin Pannullo, Marc Wagner et al.·Jul 16, 2020SaveLearn
Lattice study of thermodynamic properties of dense QC2DIn this paper we study thermodynamic properties of dense cold SU(2) QCD within lattice simulation with dynamical rooted staggered quarks which in the continuum limit correspond to Nf=2 quark…N. Astrakhantsev, V. V. Braguta, E. -M. Ilgenfritz et al.·Jul 15, 2020SaveLearn
Estimation of Thermodynamic Observables in Lattice Field Theories with Deep Generative ModelsIn this work, we demonstrate that applying deep generative machine learning models for lattice field theory is a promising route for solving problems where Markov Chain Monte Carlo (MCMC) methods are…Kim A. Nicoli, Christopher J. Anders, Lena Funcke et al.·Jul 14, 2020SaveLearn
Bc → J/ Form Factors for the full q2 range from Lattice QCDWe present the first lattice QCD determination of the Bc → J/ vector and axial-vector form factors. These will enable experimental information on the rate for Bc semileptonic…Judd Harrison, Christine T. H. Davies, Andrew Lytle·Jul 14, 2020SaveLearn
R(J/) and Bc- → J/ - Lepton Flavor Universality Violating Observables from Lattice QCDWe use our lattice QCD computation of the Bc→ J/ form factors to determine the differential decay rate for the semitauonic decay channel and construct the ratio of branching…Judd Harrison, Christine T. H. Davies, Andrew Lytle·Jul 14, 2020SaveLearn
Valence parton distribution of pion from lattice QCD: Approaching continuumWe present a high-statistics lattice QCD determination of the valence parton distribution function (PDF) of the pion, with a mass of 300 MeV, using two very fine lattice spacings of a=0.06 fm and…Xiang Gao, Luchang Jin, Christos Kallidonis et al.·Jul 13, 2020SaveLearn
The glueball spectrum of SU(3) gauge theory in 3+1 dimensionWe calculate the low-lying glueball spectrum of the SU(3) lattice gauge theory in 3+1 dimensions for the range of beta up to beta=6.50 using the standard plaquette action. We do so for states in all…Andreas Athenodorou, Michael Teper·Jul 13, 2020SaveLearn
Electric conductivity in finite-density SU(2) lattice gauge theory with dynamical fermionsWe study the dependence of the electric conductivity on chemical potential in finite-density SU(2) gauge theory with Nf = 2 flavours of rooted staggered sea quarks, in combination with…P. V. Buividovich, D. Smith, L. von Smekal·Jul 10, 2020SaveLearn