Prospects for large N gauge theories on the latticeI will review recent progress on addressing large N gauge theories on the lattice. The focus will be put on the use of large N volume independence as an effective tool to compute non-perturbative…Margarita Garcia Perez·Jan 29, 2020SaveLearn
(1+1)-d U(1) Quantum link models from effective Hamiltonians of dipolar moleculesWe study the promising idea of using dipolar molecular systems as analog quantum simulators for quantum link models, which are discrete versions of lattice gauge theories. In a quantum link model the…Jiayu Shen, Di Luo, Michael Highman et al.·Jan 27, 2020SaveLearn
Simulating gauge theories on Lefschetz thimblesLefschetz thimbles have been proposed recently as a possible solution to the complex action problem (sign problem) in Monte Carlo simulations. Here we discuss pure abelian gauge theory with a complex…Jan M. Pawlowski, Manuel Scherzer, Christian Schmidt et al.·Jan 27, 2020SaveLearn
Continuum limit of SU(3) N=1 supersymmetric Yang-Mills theory and supersymmetric gauge theories on the latticeWe summarize our investigations of several aspects of N=1 supersymmetric Yang-Mills (SYM) theory. We present our final results for SU(3) N=1 SYM simulated with Wilson…Sajid Ali, Georg Bergner, Henning Gerber et al.·Jan 27, 2020SaveLearn
Quark masses and decay constants in Nf=2+1+1 isoQCD with Wilson clover twisted mass fermionsWe present a preliminary study of the pion, kaon and D-meson masses and decay constants in isosymmetric QCD, as well as a preliminary result for the light-quark renormalized mass. The analysis is…Extended Twisted Mass Collaboration, Georg Bergner, Petros Dimopoulos et al.·Jan 24, 2020SaveLearn
Renormalization of bilinear and four-fermion operators through temporal momentsWe propose a renormalization scheme that can be simply implemented on the lattice. It consists of the temporal moments of two-point and three-point functions calculated with finite valence quark…Tsutomu Ishikawa, Katsumasa Nakayama, Shoji Hashimoto·Jan 24, 2020SaveLearn
Skewness, kurtosis and the 5th and 6th order cumulants of net baryon-number distributions from lattice QCD confront high-statistics STAR dataWe present new results on up to 6th order cumulants of net baryon-number fluctuations at small values of the baryon chemical potential, μB, obtained in lattice QCD calculations with physical…A. Bazavov, D. Bollweg, H. -T. Ding et al.·Jan 23, 2020SaveLearn
Frequency-splitting estimators for single-propagator tracesIn these proceedings we address the computation of quark-line disconnected diagrams in lattice QCD. The evaluation of these diagrams is required for many phenomenologically interesting observables,…Leonardo Giusti, Tim Harris, Alessandro Nada et al.·Jan 23, 2020SaveLearn
Efficient solution of the multi-channel Lüscher determinant condition through eigenvalue decompositionWe present a method for efficiently finding solutions of Lüscher's quantisation condition, the equation which relates two-particle scattering amplitudes to the discrete spectrum of states in a…Antoni J. Woss, David J. Wilson, Jozef J. Dudek·Jan 23, 2020SaveLearn
Lattice results on dibaryons and baryon--baryon interactionsWe present the recent study on dibaryons at the almost physical pion mass in lattice QCD by the HAL QCD potential method.Sinya Aoki·Jan 23, 2020SaveLearn
Axial U(1) symmetry and mesonic correlators at high temperature in Nf=2 lattice QCDWe investigate the high-temperature phase of QCD using lattice QCD simulations with Nf = 2 dynamical Möbius domain-wall fermions. On generated configurations, we study the axial U(1) symmetry,…Kei Suzuki, Sinya Aoki, Yasumichi Aoki et al.·Jan 22, 2020SaveLearn
Structure and transitions of nucleon excitations via parity-expanded variational analysisThe recently-introduced Parity Expanded Variational Analysis (PEVA) technique allows for the isolation of baryon eigenstates on the lattice at finite momentum free from opposite-parity contamination.…Finn M. Stokes, Waseem Kamleh, Derek B. Leinweber·Jan 22, 2020SaveLearn
Determining the glue component of the nucleonComputing the gluon component of momentum in the nucleon is a difficult and computationally expensive problem, as the matrix element involves a quark-line-disconnected gluon operator which suffers…R. Horsley, T. Howson, W. Kamleh et al.·Jan 21, 2020SaveLearn
Universal low-temperature behavior of two-dimensional lattice scalar chromodynamicsWe study the role that global and local nonabelian symmetries play in two-dimensional lattice gauge theories with multicomponent scalar fields. We start from a maximally O(M)-symmetric…Claudio Bonati, Andrea Pelissetto, Ettore Vicari·Jan 21, 2020SaveLearn
Localization with overlap fermionsWe study the finite temperature localization transition in the spectrum of the overlap Dirac operator. Simulating the quenched approximation of QCD, we calculate the mobility edge, separating…Reka A. Vig, Tamas G. Kovacs·Jan 19, 2020SaveLearn
Gauge Corrections to Strong Coupling Lattice QCD on Anisotropic LatticesLattice QCD with staggered fermions can be formulated in dual variables to address the finite baryon density sign problem. In the past we have performed simulations in the strong coupling regime,…Jangho Kim, Marc Klegrewe, Wolfgang Unger·Jan 19, 2020SaveLearn
Chiral Ward identities for Dirac eigenmodes with staggered fermionsWe study chiral properties of eigenvalue spectrum for staggered quarks. We present a new method to identify would-be zero modes and nonzero modes using their symmetry and chiral properties. Here, we…Hwancheol Jeong, Chulwoo Jung, Sunghee Kim et al.·Jan 18, 2020SaveLearn
Two-pion scattering amplitude from Bethe-Salpeter wave function at the interaction boundaryWe observe that the ratio of the on-shell scattering amplitude to the Bethe-Salpeter (BS) wave function outside the interaction range is almost independent of time in our quenched calculation of the…Takeshi Yamazaki, Yusuke Namekawa·Jan 17, 2020SaveLearn
Lattice QCD package GWU-code and QUDA with HIPThe open source HIP platform for GPU computing provides an uniform framework to support both the NVIDIA and AMD GPUs, and also the possibility to porting the CUDA code to the HIP- compatible one. We…Yu-Jiang Bi, Yi Xiao, Ming Gong et al.·Jan 16, 2020SaveLearn
Calculating the Two-photon Contribution to π0 → e+ e- Decay AmplitudeWe develop a new method that allows us to deal with two-photon intermediate states in a lattice QCD calculation. We apply this method to perform a first-principles calculation of the $π0 →…Norman H. Christ, Xu Feng, Luchang Jin et al.·Jan 16, 2020SaveLearn
Improvement of heavy-heavy and heavy-light currents with the Oktay-Kronfeld actionThe CKM matrix elements Vcb and Vub can be obtained by combining data from the experiments with lattice QCD results for the semi-leptonic form factors for the $B D …Jon A. Bailey, Yong-Chull Jang, Sunkyu Lee et al.·Jan 15, 2020SaveLearn
Calculation of the KL-KS mass difference for physical quark massesIn this article, I will present the status of our calculation of the difference between the masses of the long- and short-lived neutral K mesons, ΔmK predicted by the Standard Model. This…Bigeng Wang·Jan 15, 2020SaveLearn
Structure functions from the Compton amplitudeWe have initiated a program to compute the Compton amplitude from lattice QCD with the Feynman-Hellman method. This amplitude is related to the structure function via a Fredholm integral equation of…CSSM collaboration, Roger Horsley, Yoshifumi Nakamura et al.·Jan 15, 2020SaveLearn
Quantum computation of thermal averages in the presence of a sign problemWe illustrate the application of Quantum Computing techniques to the investigation of the thermodynamical properties of a simple system, made up of three quantum spins with frustrated pair…Giuseppe Clemente, Marco Cardinali, Claudio Bonati et al.·Jan 15, 2020SaveLearn
Meson masses in external magnetic fields with HISQ fermionsWe studied the temporal correlation function of mesons in the pseudo-scalar channel in (2+1)-flavor QCD in the presence of external magnetic fields at zero temperature. The simulations were performed…Heng-Tong Ding, Sheng-Tai Li, Swagato Mukherjee et al.·Jan 15, 2020SaveLearn