Universal features of the Abelian Polyakov loop in 1+1 dimensionWe show that the Polyakov loop of the two-dimensional lattice Abelian Higgs model can be calculated using the tensor renormalization group approach. We check the accuracy of the results using…Judah Unmuth-Yockey, Jin Zhang, Alexei Bazavov et al.·Jul 24, 2018SaveLearn
New extended interpolating fields built from three-dimensional fermionsNew extended interpolating operators made of quenched three dimensional fermions are introduced in the context of lattice QCD. The mass of the 3D fermions can be tuned in a controlled way to find a…Mauro Papinutto, Francesco Scardino, Stefan Schaefer·Jul 23, 2018SaveLearn
Nonperturbative investigations of SU(3) gauge theory with eight dynamical flavorsWe present our lattice studies of SU(3) gauge theory with Nf = 8 degenerate fermions in the fundamental representation. Using nHYP-smeared staggered fermions we study finite-temperature…Lattice Strong Dynamics, Collaboration, : et al.·Jul 23, 2018SaveLearn
The πγ ππ transition and the radiative decay width from lattice QCDWe report a lattice QCD determination of the πγ ππ transition amplitude for the P-wave, I=1 two-pion final state, as a function of the photon virtuality and ππ invariant…Constantia Alexandrou, Luka Leskovec, Stefan Meinel et al.·Jul 22, 2018SaveLearn
Applying constrained simulations for low temperature lattice QCD at finite baryon chemical potentialWe study the density of states method as well as reweighting to explore the low temperature phase diagram of QCD at finite baryon chemical potential. We use four flavors of staggered quarks, a…G. Endrodi, Z. Fodor, S. D. Katz et al.·Jul 22, 2018SaveLearn
Topology in full QCD at high temperature: a multicanonical approachWe investigate the topological properties of Nf = 2+1 QCD with physical quark masses, at temperatures around 500 MeV. With the aim of obtaining a reliable sampling of topological modes in a regime…Claudio Bonati, Massimo D'Elia, Guido Martinelli et al.·Jul 20, 2018SaveLearn
Dual simulation of the 2d U(1) gauge Higgs model at topological angle θ= π\,: Critical endpoint behaviorWe simulate the 2d U(1) gauge Higgs model on the lattice with a topological angle θ. The corresponding complex action problem is overcome by using a dual representation based on the Villain action…Christof Gattringer, Daniel Göschl, Tin Sulejmanpasic·Jul 20, 2018SaveLearn
Proton Isovector Helicity Distribution on the Lattice at Physical Pion MassWe present a state-of-the-art calculation of the isovector quark helicity Bjorken-x distribution in the proton using lattice-QCD ensembles at the physical pion mass. We compute quasi-distributions…Huey-Wen Lin, Jiunn-Wei Chen, Xiangdong Ji et al.·Jul 18, 2018SaveLearn
Radiative transitions of doubly charmed baryons in lattice QCDWe evaluate the spin-3/2 spin-1/2 electromagnetic transitions of the doubly charmed baryons on 2+1 flavor, 323 × 64 PACS-CS lattices with a pion mass of 156(9) MeV/c2. A…H. Bahtiyar, K. U. Can, G. Erkol et al.·Jul 18, 2018SaveLearn
Pion distribution amplitude from Euclidean correlation functions: Exploring universality and higher-twist effectsBuilding upon our recent study arXiv:1709.04325, we investigate the feasibility of calculating the pion distribution amplitude from suitably chosen Euclidean correlation functions at large momentum.…Gunnar S. Bali, Vladimir M. Braun, Benjamin Gläßle et al.·Jul 17, 2018SaveLearn
Unpolarized isovector quark distribution function from Lattice QCD: A systematic analysis of renormalization and matchingWe present a detailed Lattice QCD study of the unpolarized isovector quark Parton Distribution Function (PDF) using large-momentum effective theory framework. We choose a quasi-PDF defined by a…Yu-Sheng Liu, Jiunn-Wei Chen, Yi-Kai Huo et al.·Jul 17, 2018SaveLearn
θ dependence in trace deformed SU(3) Yang-Mills theory: a lattice studyIn this paper we investigate, by means of numerical lattice simulations, the topological properties of the trace deformed SU(3) Yang-Mills theory defined on S1×R3. More precisely,…Claudio Bonati, Marco Cardinali, Massimo D'Elia·Jul 17, 2018SaveLearn
Finite size effect on pseudoscalar meson sector in 2+1 flavor QCD at the physical pointWe investigate the finite size effect on pseudoscalar meson masses and decay constants using a subset of the "PACS10" configurations which are generated keeping the space-time volumes over…K. -I. Ishikawa, N. Ishizuka, Y. Kuramashi et al.·Jul 17, 2018SaveLearn
Charmonium and bottomonium spectral functions in the vector channelIn this paper we report our results on quarkonium spectral functions in the vector channel obtained from quenched lattice QCD simulations at T∈[0.75, 2.25]~Tc. The calculations have been…Heng-Tong Ding, Olaf Kaczmarek, Anna-Lena Kruse et al.·Jul 17, 2018SaveLearn
A Solution to the 1+1D Gauged Chiral Fermion ProblemWe show that the 3450 U(1) chiral fermion theory can appear as the low energy effective field theory of a 1+1D local lattice model, with an on-site U(1) symmetry and finite-range interactions. The…Juven Wang, Xiao-Gang Wen·Jul 16, 2018SaveLearn
Machine Learning Estimators for Lattice QCD ObservablesA novel technique using machine learning (ML) to reduce the computational cost of evaluating lattice quantum chromodynamics (QCD) observables is presented. The ML is trained on a subset of background…Boram Yoon, Tanmoy Bhattacharya, Rajan Gupta·Jul 16, 2018SaveLearn
Chiral phase transition of (2+1)-flavor QCDWe present here results on the determination of the critical temperature in the chiral limit for (2+1)-flavor QCD. We propose two novel estimators of the chiral critical temperature where quark mass…H. -T. Ding, P. Hegde, F. Karsch et al.·Jul 16, 2018SaveLearn
Lattice-based QCD equation of state at finite baryon density: Cluster Expansion ModelThe QCD equation of state at finite baryon density is studied in the framework of a Cluster Expansion Model (CEM), which is based on the fugacity expansion of the net baryon density. The CEM uses the…V. Vovchenko, J. Steinheimer, O. Philipsen et al.·Jul 16, 2018SaveLearn
Lattice computation of the electromagnetic contributions to kaon and pion massesWe present a lattice calculation of the electromagnetic (EM) effects on the masses of light pseudoscalar mesons. The simulations employ 2+1 dynamical flavors of asqtad QCD quarks, and quenched…S. Basak, A. Bazavov, C. Bernard et al.·Jul 15, 2018SaveLearn
The QCD crossover at zero and non-zero baryon densities from Lattice QCDWe map out the QCD crossover line Tc(μB)Tc(0) = 1 - κ2 ( μBTc(0) )2 - κ4 ( μBTc(0) )4 + O(μB6) for the first time up to…Patrick Steinbrecher·Jul 15, 2018SaveLearn
Non-abelian lattice gauge theory with a topological actionSU(2) gauge theory is investigated with a lattice action which is insensitive to small perturbations of the lattice gauge fields. Bare perturbation theory can not be defined for such actions at all.…Daniel Nogradi, Lorinc Szikszai, Zoltan Varga·Jul 13, 2018SaveLearn
Mass splittings in a linear sigma model for multiflavor gauge theoriesWe calculate the tree-level mass spectrum for a linear sigma model describing the scalar and pseudoscalar mesons of a SU(3) local gauge theory with Dirac fermions in the fundamental representation.…Diego De Floor, Erik Gustafson, Yannick Meurice·Jul 13, 2018SaveLearn
Monopole and instanton effects in QCDWe aim to show the effects of the magnetic monopoles and instantons in quantum chromodynamics (QCD) on observables; therefore, we introduce a monopole and anti-monopole pair in the QCD vacuum of a…Masayasu Hasegawa·Jul 12, 2018SaveLearn
Finite-volume spectrum of π+π+ and π+π+π+ systemsThe ab-initio understanding of hadronic three-body systems above threshold, such as exotic resonances or the baryon spectrum, requires the mapping of the finite-volume eigenvalue spectrum, produced…Maxim Mai, Michael Doring·Jul 12, 2018SaveLearn
Nucleon form factors on a large volume lattice near the physical point in 2+1 flavor QCDWe present results for the isovector nucleon form factors measured on a 964 lattice at almost the physical pion mass with a lattice spacing of 0.085 fm in 2+1 flavor QCD. The configurations are…Ken-Ichi Ishikawa, Yoshinobu Kuramashi, Shoichi Sasaki et al.·Jul 11, 2018SaveLearn