mc (and mb) from lattice QCDQuark mass determinations based on lattice QCD simulations have continued to make strides in recent years. Here I review that progress with a focus on developments computing the charm (and bottom)…Andrew T. Lytle·Oct 28, 2021SaveLearn
Heavy-dense QCD at fixed baryon number without a sign problemQCD at fixed baryon number can be formulated in terms of transfer matrices explicitly defined in the canonical sectors. In the heavy-dense limit, the fermionic contributions to the canonical…Patrick Bühlmann, Urs Wenger·Oct 28, 2021SaveLearn
QCD thermodynamics at non-zero isospin asymmetryWe study the thermodynamic properties of QCD at nonzero isospin chemical potential using improved staggered quarks at physical quark masses. In particular, we discuss the determination of the…Bastian B. Brandt, Francesca Cuteri, Gergely Endrodi·Oct 27, 2021SaveLearn
Monopoles of the Dirac type and color confinement in QCDWe present results of SU(3) Monte-Carlo studies of a new color confinement scheme proposed recently due to Abelian-like monopoles of the Dirac type corresponding in the continuum limit to violation…Tsuneo Suzuki, Atsuki Hiraguchi, Katsuya Ishiguro·Oct 27, 2021SaveLearn
Tetraquark channels with b b pair in the static limitBelle experiment discovered two hadrons with exotic quark content Zb+ bb du. We present a lattice study of the bb du systems with various quantum numbers using static…Mitja Sadl, Sasa Prelovsek·Oct 27, 2021SaveLearn
Gluon Parton Distribution of the Pion and Nucleon from Lattice QCDWe present the x-dependent nucleon and pion gluon distribution from lattice QCD using the pseudo-PDF approach, on lattice ensembles with 2+1+1 flavors of highly improved staggered quarks (HISQ),…Zhouyou Fan, Huey-Wen Lin·Oct 27, 2021SaveLearn
Monte Carlo simulations of phonon propagation in the Fermi-sea of Weyl spinors and detection of hysteresis effects using GroupoidsWe considered symplectic quaternions sitting on a (2+1)D lattice in momentum space which interact with nearest neighbor interactions. The action is expressed by fixed point actions given by the…Sadataka Furui, Serge Dos Santos·Oct 27, 2021SaveLearn
Regularisation in Nonperturbative Extensions of Effective Field TheoryThe process of renormalisation in nonperturbative Hamiltonian Effective Field Theory (HEFT) is examined in the -resonance scattering channel. As an extension of effective field theory…Curtis D. Abell, Derek B. Leinweber, Anthony W. Thomas et al.·Oct 27, 2021SaveLearn
Determination of hybrid charmonium meson massesWe report initial results from our study of the masses and decay constants of the lightest multiplet of charmonium-like hybrid mesons. We obtain precise measurements of the 1-+ state through the…Gaurav Ray, Craig McNeile·Oct 27, 2021SaveLearn
Finite-density QCD, PT symmetry, and dual algorithmsFinite-density QCD and many other field theories with sign problems have a PT-type symmetry. After a brief introduction to PT-symmetric field theories, a real dual…Moses A. Schindler, Stella T. Schindler, Michael C. Ogilvie·Oct 26, 2021SaveLearn
Non-perturbative decoupling of massive fermionsSU(2) gauge theory with Nf=24 massless fermions is non-interacting at long distances, i.e. it has an infrared fixed point at vanishing coupling. With massive fermions the fermions are expected to…Tobias Rindlisbacher, Kari Rummukainen, Ahmed Salami et al.·Oct 26, 2021SaveLearn
Roberge-Weiss transitions at imaginary isospin chemical potentialAt finite imaginary values of the chemical potential, QCD is free of the sign problem. Moreover, at high temperatures the partition function exhibits a new symmetry (the Roberge-Weiss symmetry)…Amine Chabane, Gergely Endrödi·Oct 26, 2021SaveLearn
Machine learning spectral functions in lattice QCDWe study the inverse problem of reconstructing spectral functions from Euclidean correlation functions via machine learning. We propose a novel neural network, SVAE, which is based on the variational…S. -Y. Chen, H. -T. Ding, F. -Y. Liu et al.·Oct 26, 2021SaveLearn
Continuum limit of two-dimensional multiflavor scalar gauge theoriesWe address the interplay between local and global symmetries by analyzing the continuum limit of two-dimensional multicomponent scalar lattice gauge theories, endowed by non-Abelian local and global…Claudio Bonati, Alessio Franchi, Andrea Pelissetto et al.·Oct 26, 2021SaveLearn
QCD viscosity by combining the gradient flow and sparse modeling methodsWe give a new description to obtain the shear viscosity in QCD at finite temperature. Firstly, we obtain the correlation function of the renormalized energy-momentum tensor using the gradient flow…Etsuko Itou, Yuki Nagai·Oct 26, 2021SaveLearn
Controlling unwanted exponentials in lattice calculations of radiative leptonic decaysTwo important sources of systematic errors in lattice QCD calculations of radiative leptonic decays are unwanted exponentials in the sum over intermediate states and unwanted excited states created…Christopher Kane, Davide Giusti, Christoph Lehner et al.·Oct 25, 2021SaveLearn
New lattice results for SU(2) gauge theory with one adjoint Dirac flavorMotivated by recent scenarios of exotic infrared behaviour and by earlier lattice findings, we present results for the SU(2) gauge theory with one Dirac flavor in the adjoint representation. This…Ed Bennett, Andreas Athenodorou, Georg Bergner et al.·Oct 25, 2021SaveLearn
Lattice pure gauge compact QED in the Landau gauge: the photon propagator, the phase structure and the presence of Dirac stringsIn this work we investigate the lattice Landau gauge photon propagator together with the average number of Dirac strings in the compact formulation of QED for the pure gauge version of the theory as…Lee C. Loveridge, Orlando Oliveira, Paulo J. Silva·Oct 25, 2021SaveLearn
Remnants of large-Nf inhomogeneities in the 2-flavor chiral Gross-Neveu modelWe study the (1+1)-dimensional chiral Gross-Neveu model on the lattice. At finite density, analytic mean-field results predict the existence of inhomogeneous condensates breaking both chiral…Julian J. Lenz, Michael Mandl·Oct 25, 2021SaveLearn
Lattice study of the confinement/deconfinement transition in rotating gluodynamicsWe study the influence of relativistic rotation on the confinement/deconfinement phase transition in gluodynamics by means of lattice simulations. The simulation is performed in the reference frame…V. V. Braguta, A. Yu. Kotov, D. D. Kuznedelev et al.·Oct 23, 2021SaveLearn
Localised Dirac eigenmodes and Goldstone's theorem at finite temperatureI show that a finite density of near-zero localised Dirac modes can lead to the disappearance of the massless excitations predicted by the finite-temperature version of Goldstone's theorem in the…Matteo Giordano·Oct 23, 2021SaveLearn
Thermal QCD with external imaginary electric fields on the latticeWe study QCD at finite temperature in the presence of imaginary electric fields. In particular, we determine the electric susceptibility, the leading coefficient in the expansion of the QCD pressure…Gergely Endrodi, Gergely Marko·Oct 23, 2021SaveLearn
Critical Three-Dimensional Ising Model on Spheriods from the Conformal BootstrapWe construct a conformal map from R3 to a three-dimensional spheriod, which includes S3, a double-cover of the 3-ball, and R × S2 as limiting cases.…Daniel Berkowitz, George Fleming·Oct 23, 2021SaveLearn
Hybrid stochastic method for the tensor renormalization groupWe propose a hybrid stochastic method for the tensor renormalization group (TRG) approach. TRG is known as a powerful tool to study the many-body systems and quantum field theory on the lattice. It…Hiroshi Ohki, Erika Arai, Masaaki Tomii·Oct 22, 2021SaveLearn
Investigating N Nπ axial matrix elementsExcited state contamination is one of the most challenging sources of systematics to tackle in the determination of nucleon matrix elements and form factors. The signal-to-noise problem prevents one…Lorenzo Barca, Gunnar S. Bali, Sara Collins·Oct 22, 2021SaveLearn