Nucleon strange electromagnetic form factorsThe role of the strange quarks on the low-energy interactions of the proton can be probed through the strange electromagnetic form factors. Knowledge of these form factors provides essential input…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Sep 24, 2019SaveLearn
Nonperturbative potential for study of quarkonia in QGPA thermal potential can be defined to facilitate understanding the behavior of quarkonia in quark-gluon plasma. A nonperturbative evaluation of this potential from lattice QCD is difficult, as it…Dibyendu Bala, Saumen Datta·Sep 23, 2019SaveLearn
Consistency checks for two-body finite-volume matrix elements: I. Conserved currents and bound statesRecently, a framework has been developed to study form factors of two-hadron states probed by an external current. The method is based on relating finite-volume matrix elements, computed using…Raúl A. Briceño, Maxwell T. Hansen, Andrew W. Jackura·Sep 23, 2019SaveLearn
Finite-density QCD transition in magnetic field backgroundUsing numerical simulations of lattice QCD with physical quark masses, we reveal the influence of magnetic-field background on chiral and deconfinement crossovers in finite-temperature QCD at low…V. V. Braguta, M. N. Chernodub, A. Yu. Kotov et al.·Sep 20, 2019SaveLearn
Pion Valence Structure from Ioffe Time Pseudo-DistributionsWe present a calculation of the pion valence quark distribution extracted using the formalism of reduced Ioffe time pseudo-distributions or more commonly known as pseudo-PDFs. Our calculation is…Bálint Joó, Joseph Karpie, Kostas Orginos et al.·Sep 18, 2019SaveLearn
Including Tetraquark Operators in the Low-Lying Scalar Meson Sectors in Lattice QCDLattice QCD allows us to probe the low-lying hadron spectrum in finite-volume using a basis of single- and multi-hadron interpolating operators. Here we examine the effect of including tetraquark…Daniel Darvish, Ruairí Brett, John Bulava et al.·Sep 17, 2019SaveLearn
Glueball Spins in D=3 Yang-MillsWe determine spins of more than 100 low lying glueball states in D=2+1 dimensional SU(4) gluodynamics by a lattice calculation. We go up to J=8 in the spin value. We compare the resulting…Peter Conkey, Sergei Dubovsky, Michael Teper·Sep 16, 2019SaveLearn
Spectroscopy From The Lattice: The Scalar GlueballLattice calculations allow us to probe the low-lying, non-perturbative spectrum of QCD using first principles numerical methods. Here we present the low-lying spectrum in the scalar sector with…Ruairí Brett, John Bulava, Daniel Darvish et al.·Sep 16, 2019SaveLearn
Classifying Topological Charge in SU(3) Yang-Mills Theory with Machine LearningWe apply a machine learning technique for identifying the topological charge of quantum gauge configurations in four-dimensional SU(3) Yang-Mills theory. The topological charge density measured on…Takuya Matsumoto, Masakiyo Kitazawa, Yasuhiro Kohno·Sep 13, 2019SaveLearn
Gradient flow step-scaling function for SU(3) with twelve flavorsWe calculate the step scaling function, the lattice analog of the renormalization group β-function, for an SU(3) gauge theory with twelve flavors. The gauge coupling of this system runs very…Anna Hasenfratz, Claudio Rebbi, Oliver Witzel·Sep 12, 2019SaveLearn
Critical endpoint in the continuum limit and critical endline at N T=6 of the finite temperature phase transition of QCD with clover fermionsWe investigate the critical endpoints of the finite temperature phase transition of QCD at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and…Yoshifumi Nakamura, Yoshinobu Kuramashi, Hiroshi Ohno et al.·Sep 12, 2019SaveLearn
Three-body unitarity versus finite-volume π+π+π+ spectrum from lattice QCDStrong three-body interactions above threshold govern the dynamics of many exotics and conventional excited mesons and baryons. Three-body finite-volume energies calculated from lattice QCD promise…M. Mai, M. Döring, C. Culver et al.·Sep 12, 2019SaveLearn
Towards the determination of the charm quark mass on Nf=2+1 CLS ensemblesWe present the current status of our lattice QCD determination of the charm quark mass using Nf=2+1 dynamical, non-perturbatively O(a) improved Wilson fermions. A subset of CLS…Jochen Heitger, Fabian Joswig, Simon Kuberski·Sep 11, 2019SaveLearn
I = 3 three-pion scattering amplitude from lattice QCDWe analyze the spectrum of two- and three-pion states of maximal isospin obtained recently for isosymmetric QCD with pion mass M≈ 200\;MeV in Ref. [1]. Using the relativistic three-particle…Tyler D. Blanton, Fernando Romero-López, Stephen R. Sharpe·Sep 6, 2019SaveLearn
Patterns of flavour symmetry breaking in hadron matrix elements involving u, d and s quarksBy considering a flavour expansion about the SU(3)-flavour symmetric point, we investigate how flavour-blindness constrains octet baryon matrix elements after SU(3) is broken by the mass difference…J. M. Bickerton, R. Horsley, Y. Nakamura et al.·Sep 5, 2019SaveLearn
Zb tetraquark channel and B B* interaction from lattice QCDTwo tetraquark candidates Zb(10610) and Zb(10650) with flavor structure bb du were discovered by Belle experiment in 2011. We present a preliminary Nf=2 lattice study of the $…S. Prelovsek, H. Bahtiyar, J. Petkovic·Sep 5, 2019SaveLearn
Isospin-breaking corrections to the muon magnetic anomaly in Lattice QCDIn this contribution we present a lattice calculation of the leading-order electromagnetic and strong isospin-breaking (IB) corrections to the quark-connected hadronic-vacuum-polarization (HVP)…Davide Giusti, Vittorio Lubicz, Guido Martinelli et al.·Sep 4, 2019SaveLearn
Chiral-spin symmetry of the meson spectral function above TcRecently, via calculation of spatial correlators of J=0,1 isovector operators using a chirally symmetric Dirac operator within NF=2 QCD, it has been found that QCD at temperatures Tc - 3 Tc…C. Rohrhofer, Y. Aoki, L. Ya. Glozman et al.·Sep 3, 2019SaveLearn
Renormalising vector currents in lattice QCD using momentum-subtraction schemesWe examine the renormalisation of flavour-diagonal vector currents in lattice QCD with the aim of understanding and quantifying the systematic errors from nonperturbative artefacts associated with…D. Hatton, C. T. H. Davies, G. P. Lepage et al.·Sep 2, 2019SaveLearn
Hermitizing the HAL QCD potential in the derivative expansionA formalism is given to hermitize the HAL QCD potential, which needs to be non-hermitian except the leading order (LO) local term in the derivative expansion as the Nambu-Bethe-Salpeter (NBS) wave…Sinya Aoki, Takumi Iritani, Koichi Yazaki·Sep 2, 2019SaveLearn
Nucleon axial, tensor and scalar charges and σ-terms in lattice QCDWe determine the nucleon axial, scalar and tensor charges within lattice Quantum Chromodynamics including all contributions from valence and sea quarks. We analyze three gauge ensembles simulated…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Sep 1, 2019SaveLearn
Lattice investigation of an inhomogeneous phase of the 2+1-dimensional Gross-Neveu model in the limit of infinitely many flavorsWe investigate the phase structure of the 2+1-dimensional Gross-Neveu model in the large-Nf limit, where Nf denotes the number of fermion flavors. We discuss two different fermion representations and…Marc Winstel, Jonas Stoll, Marc Wagner·Aug 30, 2019SaveLearn
Topology via Spectral Projectors with Staggered FermionsThe spectral projectors method is a way to obtain a theoretically well posed definition of the topological susceptibility on the lattice. Up to now this method has been defined and applied only to…Claudio Bonanno, Giuseppe Clemente, Massimo D'Elia et al.·Aug 30, 2019SaveLearn
openQ*D code: a versatile tool for QCD+QED simulationsWe present the open-source package openQ*D-1.0, which has been primarily, but not uniquely, designed to perform lattice simulations of QCD+QED and QCD, with and without C* boundary conditions, and…Isabel Campos, Patrick Fritzsch, Martin Hansen et al.·Aug 30, 2019SaveLearn
Relativistic Lattice Boltzmann Methods: Theory and ApplicationsWe present a systematic account of recent developments of the relativistic Lattice Boltzmann method (RLBM) for dissipative hydrodynamics. We describe in full detail a unified, compact and…A. Gabbana, D. Simeoni, S. Succi et al.·Aug 29, 2019SaveLearn