Quark flavor decomposition of the nucleon axial form factorsWe present results on the isoscalar form factors including the disconnected contributions, as well as on the strange and charm quark form factors. Using previous results on the isovector form…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Jun 25, 2021SaveLearn
Lattice QCD Study of Transverse-Momentum Dependent Soft FunctionIn this work, we perform a lattice QCD study of the intrinsic, rapidity-independent soft function within the framework of large momentum effective theory. The computation is carried out using a gauge…Yuan Li, Shi-Cheng Xia, Constantia Alexandrou et al.·Jun 24, 2021SaveLearn
Towards Quantum Simulating Non-Abelian Gauge TheoriesIn this article, we review some of the recent developments towards the future goal of quantum computing or quantum simulating lattice QCD. This includes a novel theoretical framework developed for…Indrakshi Raychowdhury·Jun 22, 2021SaveLearn
Towards sampling complex actionsPath integrals with complex actions are encountered for many physical systems ranging from spin- or mass-imbalanced atomic gases and graphene to quantum chromo-dynamics at finite density to the…Lukas Kades, Martin Gärttner, Thomas Gasenzer et al.·Jun 17, 2021SaveLearn
Diquark properties from full QCD lattice simulationsWe study diquarks on the lattice in the background of a static quark, in a gauge-invariant formalism with quark masses down to almost physical mπ. We determine mass differences between diquark…Anthony Francis, Philippe de Forcrand, Randy Lewis et al.·Jun 16, 2021SaveLearn
The unreasonable effectiveness of effective string theory: the case of the 3d SU(2) Higgs modelWe study string breaking in the three dimensional SU(2) Higgs model, using values of the gauge coupling for which the confinement-like and Higgs-like regions of the phase diagram are separated just…Claudio Bonati, Michele Caselle, Silvia Morlacchi·Jun 16, 2021SaveLearn
Emergence of the resonance from the HAL QCD potential in lattice QCDWe investigate the I=1 π π interaction using the HAL QCD method in lattice QCD. We employ the (2+1)-flavor gauge configurations on 323 × 64 lattice at the lattice spacing $a ≈…Yutaro Akahoshi, Sinya Aoki, Takumi Doi·Jun 15, 2021SaveLearn
The road to solving the Gribov problem of the center vortex model in quantum chromo dynamicsThe center vortex model of the QCD vacuum is very successful in explaining the non-perturbative properties of QCD, especially confinement, chiral symmetry breaking and the topological charge of…Rudolf Golubich, Manfried Faber·Jun 15, 2021SaveLearn
Center regions as a solution to the Gribov problem of the center vortex modelThe center vortex model, capable of explaining confinement and chiral symmetry breaking, has been plagued by the lattice equivalent of Gribov copies: different maxima of the gauge functional lead to…Rudolf Golubich, Manfried Faber·Jun 15, 2021SaveLearn
Nonperturbative Renormalization of the Quark Chromoelectric Dipole Moment with the Gradient Flow:Power DivergencesThe CP-violating quark chromoelectric dipole moment (qCEDM) operator, contributing to the electric dipole moment (EDM), mixes under renormalization and particularly on the lattice with the…Jangho Kim, Thomas Luu, Matthew D. Rizik et al.·Jun 14, 2021SaveLearn
Rotated twisted-mass: a convenient regularization scheme for isospin breaking QCD and QED lattice calculationsWe propose a scheme of lattice twisted-mass fermion regularization which is particularly convenient for application to isospin breaking (IB) QCD and QED calculations, based in particular on the so…R. Frezzotti, G. Gagliardi, V. Lubicz et al.·Jun 13, 2021SaveLearn
PT symmetry, pattern formation, and finite-density QCDA longstanding issue in the study of quantum chromodynamics (QCD) is its behavior at nonzero baryon density, which has implications for many areas of physics. The path integral has a complex…Moses A. Schindler, Stella T. Schindler, Michael C. Ogilvie·Jun 13, 2021SaveLearn
Flow-based sampling for fermionic lattice field theoriesAlgorithms based on normalizing flows are emerging as promising machine learning approaches to sampling complicated probability distributions in a way that can be made asymptotically exact. In the…Michael S. Albergo, Gurtej Kanwar, Sébastien Racanière et al.·Jun 10, 2021SaveLearn
Interactions of two and three mesons including higher partial waves from lattice QCDWe study two- and three-meson systems composed either of pions or kaons at maximal isospin using Monte Carlo simulations of lattice QCD. Utilizing the stochastic LapH method, we are able to determine…Tyler D. Blanton, Andrew D. Hanlon, Ben Hörz et al.·Jun 10, 2021SaveLearn
Masses and decay constants of the η and η mesons from lattice QCDWe determine the masses, the singlet and octet decay constants as well as the anomalous matrix elements of the η and η mesons in Nf=2+1 QCD\@. The results are obtained using…Gunnar S. Bali, Vladimir Braun, Sara Collins et al.·Jun 9, 2021SaveLearn
Bayesian-Wilson coefficients in lattice QCD computations of valence PDFs and GPDsWe propose an analysis method for the leading-twist operator product expansion based lattice QCD determinations of the valence parton distribution function (PDF). In the first step, we determine the…Nikhil Karthik, Raza Sabbir Sufian·Jun 7, 2021SaveLearn
Double parton distributions in the nucleon from lattice QCDWe evaluate nucleon four-point functions in the framework of lattice QCD in order to extract the first Mellin moment of double parton distributions (DPDs) in the unpolarized proton. In this first…Gunnar S. Bali, Markus Diehl, Benjamin Gläßle et al.·Jun 7, 2021SaveLearn
Lattice QCD Equation of State for Nonvanishing Chemical Potential by Resumming Taylor ExpansionTaylor expansion in powers of baryon chemical potential (μB) is an oft-used method in lattice QCD to compute QCD thermodynamics for μB>0. Based only upon the few known lowest order Taylor…Sourav Mondal, Swagato Mukherjee, Prasad Hegde·Jun 6, 2021SaveLearn
Towards charged hadron polarizabilities from four-point functions in lattice QCDWe show how to compute electromagnetic polarizabilities of charged hadrons using four-point functions in lattice QCD. The low-energy behavior of Compton scattering amplitude is matched to matrix…Walter Wilcox, Frank X. Lee·Jun 4, 2021SaveLearn
Lattice gauge theories in the presence of a linear gauge-symmetry breakingWe study the effects of gauge-symmetry breaking (GSB) perturbations in three-dimensional lattice gauge theories with scalar fields. We study this issue at transitions in which gauge correlations are…Claudio Bonati, Andrea Pelissetto, Ettore Vicari·Jun 4, 2021SaveLearn
Machine Learning and Variational Algorithms for Lattice Field TheoryIn lattice quantum field theory studies, parameters defining the lattice theory must be tuned toward criticality to access continuum physics. Commonly used Markov chain Monte Carlo (MCMC) methods…Gurtej Kanwar·Jun 3, 2021SaveLearn
Lattice gauge theory computation of the static forceWe explore a novel approach to compute the force between a static quark and a static antiquark with lattice gauge theory directly. The approach is based on expectation values of Wilson loops or…Nora Brambilla, Viljami Leino, Owe Philipsen et al.·Jun 3, 2021SaveLearn
Probing for the Trace Estimation of a Permuted Matrix Inverse Corresponding to a Lattice DisplacementIn this work, we study probing for the more general problem of computing the trace of a permutation of A-1, say PA-1. The motivation comes from Lattice QCD where we need to construct…Heather Switzer, Andreas Stathopoulos, Eloy Romero et al.·Jun 2, 2021SaveLearn
SU(N) gauge theories in 3+1 dimensions: glueball spectrum, string tensions and topologyWe calculate the low-lying glueball spectrum, some string tensions and some properties of topology and the running coupling for SU(N) lattice gauge theories in 3+1 dimensions. We do so for N =…Andreas Athenodorou, Michael Teper·Jun 1, 2021SaveLearn
Renormalization of (2+1)D scalar Weyl spinors interactions on lattices using the Clifford groupsWe consider symplectic quaternions instead of unitary spinors sitting on a lattice, and calculate the fixed point Wilson action on a finite 2D plane expanded by u1 a e1+ u2 a e2 and on two…Sadataka Furui·May 31, 2021SaveLearn