Neural-network preconditioners for solving the Dirac equation in lattice gauge theoryThis work develops neural-network--based preconditioners to accelerate solution of the Wilson-Dirac normal equation in lattice quantum field theories. The approach is implemented for the two-flavor…Salvatore Calì, Daniel C. Hackett, Yin Lin et al.·Aug 4, 2022SaveLearn
Continuum-extrapolated NNLO Valence PDF of Pion at the Physical PointWe present lattice QCD calculations of valence parton distribution function (PDF) of pion employing next-to-next-leading-order (NNLO) perturbative QCD matching. Our calculations are based on three…Xiang Gao, Andrew D. Hanlon, Nikhil Karthik et al.·Aug 3, 2022SaveLearn
Sign optimization and complex saddle points in one-dimensional QCDWe study one-dimensional QCD at finite quark density by using the sign optimization framework. The fermion sign problem is mitigated by deforming the path integral domain, SU(3) to a complexified…Gokce Basar, Joesph Marincel·Aug 3, 2022SaveLearn
Crystalline phases at finite winding densities in a quantum link ladderCondensed matter physics of gauge theories coupled to fermions can exhibit a rich phase structure, but are nevertheless very difficult to study in Monte Carlo simulations when they are afflicted by a…Paolo Stornati, Philipp Krah, Karl Jansen et al.·Aug 3, 2022SaveLearn
Perturbative study of large N principal chiral model with twisted reductionWe compute the first four perturbative coefficients of the internal energy for the twisted reduced principal chiral model (TRPCM) using numerical stochastic perturbation theory (NSPT). This matrix…Antonio González-Arroyo, Ken-Ichi Ishikawa, Yingbo Ji et al.·Aug 3, 2022SaveLearn
Nonperturbatively Renormalized Nucleon Gluon Momentum Fraction in the Continuum Limit of Nf=2+1+1 Lattice QCDWe present the nonperturbatively renormalized nucleon gluon momentum fraction using ensembles with 2+1+1 flavors of highly improved staggered quarks (HISQ), generated by MILC Collaboration. The…Zhouyou Fan, Huey-Wen Lin, Matthew Zeilbeck·Aug 1, 2022SaveLearn
Topological susceptibility of 2d~CP1 or O(3) non-linear σ-model: is it divergent or not?The topological susceptibility of 2d CPN-1 models is expected, based on perturbative computations, to develop a divergence in the limit N 2, where these models reduce to the…Claudio Bonanno, Massimo D'Elia, Francesca Margari·Jul 30, 2022SaveLearn
Pion spectral properties above the chiral crossover of QCDSpectral functions encode a wealth of information about the dynamics of any given system, and the determination of their non-perturbative characteristics is a long-standing problem in quantum field…Peter Lowdon, Owe Philipsen·Jul 29, 2022SaveLearn
Distance between various discretized fermion actionsWe present the leading order mixed-action effect mix mπ, vs2-mπ, vv2+mπ, ss22 using HISQ, clover or overlap valence fermion actions on…Dian-Jun Zhao, Gen Wang, Fangcheng He et al.·Jul 28, 2022SaveLearn
Probing center vortices and deconfinement in SU(2) lattice gauge theory with persistent homologyWe investigate the use of persistent homology, a tool from topological data analysis, as a means to detect and quantitatively describe center vortices in SU(2) lattice gauge theory in a…Nicholas Sale, Biagio Lucini, Jeffrey Giansiracusa·Jul 27, 2022SaveLearn
Remnants of quark model in lattice QCD simulation in the Coulomb gaugeAiming at the relation between QCD and the quark model, we consider projections of gauge configurations generated in quenched lattice QCD simulations in the Coulomb gauge on a 16 3 $…Hiroki Ohata, Hideo Suganuma·Jul 27, 2022SaveLearn
Euclidean Dynamical Triangulations RevisitedWe conduct numerical simulations of a model of four dimensional quantum gravity in which the path integral over continuum Euclidean metrics is approximated by a sum over combinatorial triangulations.…Muhammad Asaduzzaman, Simon Catterall·Jul 26, 2022SaveLearn
B K and D K form factors from fully relativistic lattice QCDWe present the result of lattice QCD calculation of the scalar, vector and tensor form factors for the B K+- decay, across the full physical range of momentum transfer. We use the…W. G. Parrott, C. Bouchard, C. T. H. Davies·Jul 25, 2022SaveLearn
Nucleon isovector couplings in Nf = 2 + 1 lattice QCD at the physical pointWe present results for the scalar and tensor isovector-couplings (gS and gT) of the nucleon measured at the physical point (Mπ=135 MeV) with a single lattice spacing of $0.085\…Ryutaro Tsuji, Natsuki Tsukamoto, Yasumichi Aoki et al.·Jul 25, 2022SaveLearn
Study of the Roberge-Weiss phase caused by external uniform classical electric field using lattice QCD approachThe effect of an external electric field on the quark matter is an important question due to the presence of strong electric fields in heavy ion collisions. In the lattice QCD approach, the case of a…Ji-Chong Yang, Xiao-Ting Chang, Jian-Xing Chen·Jul 24, 2022SaveLearn
Strong-Weak Coupling Duality in Scalar Lattice QFT with Application to Strong Coupling DecompositionsDualities between quantum field theories have proven to be a powerful tool in various areas of physics. In this paper, we introduce a new perspective for obtaining strong coupling expansions based on…Nikita A. Ignatyuk, Daniel Skliannyi·Jul 23, 2022SaveLearn
The light Roberge-Weiss tricritical endpoint at imaginary isospin chemical potentialWe discuss results for the Roberge Weiss (RW) phase transition at nonzero imaginary baryon and isospin chemical potentials, in the plane of temperature and quark masses. Our study focuses on the…Bastian B. Brandt, Volodymyr Chelnokov, Francesca Cuteri et al.·Jul 21, 2022SaveLearn
The light Roberge-Weiss tricritical endpoint at imaginary isospin and baryon chemical potentialImaginary chemical potentials serve as a useful tool to constrain the QCD phase diagram and to gain insight into the thermodynamics of strongly interacting matter. In this study, we report on the…Bastian B. Brandt, Amine Chabane, Volodymyr Chelnokov et al.·Jul 20, 2022SaveLearn
Improved renormalization scheme for nonlocal operatorsIn this paper we present an improved RI-type prescription appropriate for the non-perturbative renormalization of gauge invariant nonlocal operators. In this prescription, the non-perturbative vertex…Martha Constantinou, Haralambos Panagopoulos·Jul 20, 2022SaveLearn
Gauge-equivariant flow models for sampling in lattice field theories with pseudofermionsThis work presents gauge-equivariant architectures for flow-based sampling in fermionic lattice field theories using pseudofermions as stochastic estimators for the fermionic determinant. This is the…Ryan Abbott, Michael S. Albergo, Denis Boyda et al.·Jul 18, 2022SaveLearn
Unveiling confinement in pure gauge SU(3): flux tubes, fields, and magnetic currentsA characteristic signature of quark confinement is the concentration of the chromoelectric field between a static quark-antiquark pair in a flux tube. However, the structure of this flux tube, and…M. Baker, V. Chelnokov, L. Cosmai et al.·Jul 18, 2022SaveLearn
Towards the determination of the gluon helicity distribution in the nucleon from lattice quantum chromodynamicsWe present the first exploratory lattice quantum chromodynamics (QCD) calculation of the polarized gluon Ioffe-time pseudo-distribution in the nucleon. The Ioffe-time pseudo-distribution provides a…Colin Egerer, Bálint Joó, Joseph Karpie et al.·Jul 18, 2022SaveLearn
Lattice QCD and Particle PhysicsContribution from the USQCD Collaboration to the Proceedings of the US Community Study on the Future of Particle Physics (Snowmass 2021).Andreas S. Kronfeld, Tanmoy Bhattacharya, Thomas Blum et al.·Jul 15, 2022SaveLearn
The investigations of the P-wave Bs states combining quark model and lattice QCD in the coupled channel frameworkCombining the quark model, the quark-pair-creation mechanism and B(*) K interaction, we have investigated the near-threshold P-wave Bs states in the framework of the Hamiltonian…Zhi Yang, Guang-Juan Wang, Jia-Jun Wu et al.·Jul 15, 2022SaveLearn
Windows on the hadronic vacuum polarisation contribution to the muon anomalous magnetic momentAn accurate determination of the leading-order hadronic vacuum polarisation (HVP) contribution to the anomalous magnetic moment of the muon is critical to understanding the size and significance of…C. T. H. Davies, C. DeTar, A. X. El-Khadra et al.·Jul 11, 2022SaveLearn