Deep Learning Hamiltonian Monte CarloWe generalize the Hamiltonian Monte Carlo algorithm with a stack of neural network layers and evaluate its ability to sample from different topologies in a two dimensional lattice gauge theory. We…Sam Foreman, Xiao-Yong Jin, James C. Osborn·May 7, 2021SaveLearn
Classically emulated digital quantum simulation for screening and confinement in the Schwinger model with a topological termWe perform digital quantum simulation, using a classical simulator, to study screening and confinement in a gauge theory with a topological term, focusing on (1+1)-dimensional quantum…Masazumi Honda, Etsuko Itou, Yuta Kikuchi et al.·May 7, 2021SaveLearn
Stable solvers for real-time Complex LangevinThis study explores the potential of modern implicit solvers for stochastic partial differential equations in the simulation of real-time complex Langevin dynamics. Not only do these methods offer…Daniel Alvestad, Rasmus Larsen, Alexander Rothkopf·May 6, 2021SaveLearn
Unitarity Bounds for Semileptonic Decays in Lattice QCDIn this work we discuss in detail the non-perturbative determination of the momentum dependence of the form factors entering in semileptonic decays using unitarity and analyticity constraints. The…M. Di Carlo, G. Martinelli, M. Naviglio et al.·May 6, 2021SaveLearn
Constraining 1+J 2 coupled-channel amplitudes in finite-volumeWhether one is interested in accessing the excited spectrum of hadrons or testing the standard model of particle physics, electroweak transition processes involving multi-hadron channels in the final…Raul A. Briceno, Jozef J. Dudek, Luka Leskovec·May 5, 2021SaveLearn
Tensor renormalization group approach to (1+1)-dimensional Hubbard modelWe investigate the metal-insulator transition of the (1+1)-dimensional Hubbard model in the path-integral formalism with the tensor renormalization group method. The critical chemical potential…Shinichiro Akiyama, Yoshinobu Kuramashi·May 2, 2021SaveLearn
Localization of Dirac Fermions in Finite-Temperature Gauge TheoryIt is by now well established that Dirac fermions coupled to non-Abelian gauge theories can undergo an Anderson-type localization transition. This transition affects eigenmodes in the lowest part of…Matteo Giordano, Tamas G. Kovacs·Apr 29, 2021SaveLearn
Quark masses using twisted mass fermion gauge ensemblesWe present a calculation of the up, down, strange and charm quark masses performed within the lattice QCD framework. We use the twisted mass fermion action and carry out simulations that include in…C. Alexandrou, S. Bacchio, G. Bergner et al.·Apr 27, 2021SaveLearn
Excited states of massive fermions in a chiral gauge theoryIt is shown numerically, in a chiral U(1) gauge Higgs theory in which the left and right-handed fermion components have opposite U(1) charges, that the spectrum of gauge and Higgs fields surrounding…Jeff Greensite·Apr 25, 2021SaveLearn
Quantum variational approach to lattice gauge theory at nonzero densityThe simulation of dense fermionic matters is a long-standing problem in lattice gauge theory. One hopeful solution would be the use of quantum computers. In this paper, digital quantum simulation is…Arata Yamamoto·Apr 21, 2021SaveLearn
Entanglement scaling for λφ24We study the λφ4 model in 0+2 dimensions at criticality, and effectuate a simultaneous scaling of UV and IR physics. We demonstrate that the order parameter φ, the correlation…Bram Vanhecke, Frank Verstraete, Karel Van Acoleyen·Apr 21, 2021SaveLearn
Effective string description of the confining flux tube at finite temperatureIn this review, after a general introduction to the effective string theory (EST) description of confinement in pure gauge theories, we discuss the behaviour of EST as the temperature is increased.…Michele Caselle·Apr 21, 2021SaveLearn
Static magnetic susceptibility in finite-density SU(2) lattice gauge theoryWe study static magnetic susceptibility (T, μ) in SU(2) lattice gauge theory with Nf = 2 light flavours of dynamical fermions at finite chemical potential μ. Using linear response…P. V. Buividovich, D. Smith, L. von Smekal·Apr 20, 2021SaveLearn
Breaking of the gauge symmetry in lattice gauge theoriesWe study perturbations that break gauge symmetries in lattice gauge theories. As a paradigmatic model, we consider the three-dimensional Abelian-Higgs (AH) model with an N-component scalar field and…Claudio Bonati, Andrea Pelissetto, Ettore Vicari·Apr 20, 2021SaveLearn
Improved Vcs determination using precise lattice QCD form factors for D → KWe provide a 0.8\%-accurate determination of Vcs from combining experimental results for the differential rate of D → K semileptonic decays with precise form factors that we…Bipasha Chakraborty, W. G. Parrott, C. Bouchard et al.·Apr 20, 2021SaveLearn
Density of States of the lattice Schwinger modelUsing a recently introduced tensor network method, we study the density of states of the lattice Schwinger model, a standard testbench for lattice gauge theory numerical techniques, but also the…Irene Papaefstathiou, Daniel Robaina, J. Ignacio Cirac et al.·Apr 16, 2021SaveLearn
Fluctuations and correlations of net baryon number, electric charge and strangeness in a background magnetic fieldWe present results on the second-order fluctuations of and correlations among net baryon number, electric charge and strangeness in (2+1)-flavor lattice QCD in the presence of a background magnetic…H. -T. Ding, S. -T. Li, Q. Shi et al.·Apr 14, 2021SaveLearn
Ratio of kaon and pion leptonic decay constants with Nf = 2 + 1 + 1 Wilson-clover twisted-mass fermionsWe present a determination of the ratio of kaon and pion leptonic decay constants in isosymmetric QCD (isoQCD), fK / fπ, making use of the gauge ensembles produced by the Extended Twisted Mass…C. Alexandrou, S. Bacchio, G. Bergner et al.·Apr 14, 2021SaveLearn
Gluon Parton Distribution of the Pion from Lattice QCDWe present the first determination of the x-dependent pion gluon distribution from lattice QCD using the pseudo-PDF approach. We use lattice ensembles with 2+1+1 flavors of highly improved…Zhouyou Fan, Huey-Wen Lin·Apr 13, 2021SaveLearn
Solving DWF Dirac Equation Using Multi-splitting Preconditioned Conjugate Gradient with Tensor Cores on NVIDIA GPUsWe show that using the multi-splitting algorithm as a preconditioner for the domain wall Dirac linear operator, arising in lattice QCD, effectively reduces the inter-node communication cost, at the…Jiqun Tu, M. A. Clark, Chulwoo Jung et al.·Apr 12, 2021SaveLearn
Detailed analysis of excited state systematics in a lattice QCD calculation of gAExcited state contamination remains one of the most challenging sources of systematic uncertainty to control in lattice QCD calculations of nucleon matrix elements and form factors: early time…Jinchen He, David A. Brantley, Chia Cheng Chang et al.·Apr 12, 2021SaveLearn
Isospin Breaking in Lattice QCD Computations of Decay AmplitudesThe remarkable recent progress in the precision of Lattice QCD computations for a number of physical quantities relevant for flavour physics has motivated the introduction of isospin-breaking…C. T. Sachrajda·Apr 9, 2021SaveLearn
Localization of Dirac modes in finite-temperature Z2 gauge theory on the latticeWe study the localization properties of the eigenmodes of the staggered Dirac operator in finite-temperature Z2 pure gauge theory on the lattice in 2+1 dimensions. We find that the low…György Baranka, Matteo Giordano·Apr 8, 2021SaveLearn
Strong coupling methods in QCD thermodynamicsFor a long time, strong coupling expansions have not been applied systematically in lattice QCD thermodynamics, in view of the succes of numerical Monte Carlo studies. The persistent sign problem at…Owe Philipsen·Apr 8, 2021SaveLearn
Hadronic light-by-light contribution to (g-2)μ from lattice QCD: a complete calculationWe compute the hadronic light-by-light scattering contribution to the muon g-2 from the up, down, and strange-quark sector directly using lattice QCD. Our calculation features evaluations of all…En-Hung Chao, Renwick J. Hudspith, Antoine Gérardin et al.·Apr 6, 2021SaveLearn