Topological susceptibilty in lattice QCD with exact chiral symmetry -- the index of overlap-Dirac operator versus the clover topological charge in Wilson flowUsing an ensemble of 535 gauge configurations (on the 244 × 48 lattice with a 0.06 ~fm and Mπ 260 ~MeV) which are generated by hybrid Monte Carlo (HMC) simulation of…Ting-Wai Chiu, Tung-Han Hsieh·Aug 5, 2019SaveLearn
Topological vacuum structure of the Schwinger model with matrix product statesWe numerically study the single-flavor Schwinger model with a topological θ-term, which is practically inaccessible by standard lattice Monte Carlo simulations due to the sign problem. By using…Lena Funcke, Karl Jansen, Stefan Kühn·Aug 1, 2019SaveLearn
Hyperon couplings from Nf = 2 + 1 lattice QCDWe compute various (generalized) isovector charges of the octet baryons. These include gA, gT and gS as well as the unpolarized, polarized and transversity parton distribution function (PDF)…Gunnar S. Bali, Sara Collins, Piotr Korcyl et al.·Jul 31, 2019SaveLearn
Tensor network approach to real-time path integralWe present a tensor network representation of the path integral for the one-component real scalar field theory in 1+1 dimensional Minkowski space-time. It is numerically verified by comparing with…Shinji Takeda·Jul 31, 2019SaveLearn
New way of collision experiment data analysis based on Grand Canonical Distribution and Lattice QCD dataWe propose new way of heavy ion collisions experiment data analysis. We analyze physical parameters of fireball created in RHIC experiment based on Grand Canonical Distribution and different Lattice…V. Bornyakov, D. Boyda, V. Goy et al.·Jul 28, 2019SaveLearn
Excited-state effects in nucleon structure on the lattice using hybrid interpolatorsIt would be very useful to find a way of reducing excited-state effects in lattice QCD calculations of nucleon structure that has a low computational cost. We explore the use of hybrid interpolators,…Jeremy R. Green, Michael Engelhardt, Nesreen Hasan et al.·Jul 27, 2019SaveLearn
Large Nc scaling of meson masses and decay constantsWe perform an ab initio calculation of the Nc scaling of the low-energy couplings of the chiral Lagrangian of low-energy strong interactions, extracted from the mass dependence of meson…Pilar Hernández, Carlos Pena, Fernando Romero-López·Jul 26, 2019SaveLearn
Determination of the QCD coupling from the static energy and the free energyWe present two determinations of the strong coupling \(αs\). The first one is from the static energy at three-loop accuracy, and may be considered an update of earlier determinations by some of us.…Alexei Bazavov, Nora Brambilla, Xavier Garcia i Tormo et al.·Jul 26, 2019SaveLearn
Finite size effect on vector meson and baryon sectors in 2+1 flavor QCD at the physical pointWe investigate the finite size effect on the vector meson and the baryon sectors using a subset of the "PACS10" configurations which are generated, keeping the space-time volumes over (10…K. -I. Ishikawa, N. Ishizuka, Y. Kuramashi et al.·Jul 25, 2019SaveLearn
Constraining the gauge-fixed Lagrangian in minimal Landau gaugeA continuum formulation of gauge-fixing resolving the Gribov-Singer ambiguity remains a challenge. Finding a Lagrangian formulation of operational resolutions in numerical lattice calculations, like…Axel Maas·Jul 24, 2019SaveLearn
Extraction of multiple exponential signals from lattice correlation functionsWe present a fast and simple algorithm that allows the extraction of multiple exponential signals from the temporal dependence of correlation functions evaluated on the lattice including the…S. Romiti, S. Simula·Jul 23, 2019SaveLearn
Spectral functions and critical dynamics of the O(4) model from classical-statistical lattice simulationsWe calculate spectral functions of the relativistic O(4) model from real-time lattice simulations in classical-statistical field theory. While in the low and high temperature phase of the model,…Sören Schlichting, Dominik Smith, Lorenz von Smekal·Jul 23, 2019SaveLearn
Parton distribution functions of Δ+ on the latticeWe present results for renormalized matrix elements related to the unpolarized quasi-distribution function of the Δ+ baryon making use of the large momentum effective theory. Two ensembles of…Yahui Chai, Yuan Li, Shicheng Xia et al.·Jul 23, 2019SaveLearn
Dependence of the static quark free energy on μB and the crossover temperature of Nf = 2+1 QCDWe study the dependence of the static quark free energy on the baryon chemical potential for Nf = 2+1 QCD with physical quark masses, in a range of temperature spanning from 120~MeV up to 1~GeV…Massimo D'Elia, Francesco Negro, Andrea Rucci et al.·Jul 22, 2019SaveLearn
Calculating the EoS of the dense quark-gluon plasma using the Complex Langevin equationThe pressure and energy density of the quark-gluon plasma at finite baryon chemical potential are calculated using the Complex Langevin equation. The stout smearing procedure is generalized for the…Dénes Sexty·Jul 19, 2019SaveLearn
Scale setting for QCD with Nf=3+1 dynamical quarksWe present first results of the scale setting for QCD with Nf=3+1 dynamical quarks on the lattice. We use a recently proposed massive renormalization scheme with a non-perturbatively determined…Roman Höllwieser, Francesco Knechtli, Tomasz Korzec·Jul 9, 2019SaveLearn
A coupled-channel lattice study on the resonance-like structure Zc(3900)In this exploratory study, near-threshold scattering of D and D* meson is investigated using lattice QCD with Nf=2+1+1 twisted mass fermion configurations. The calculation is performed…Ting Chen, Ying Chen, Ming Gong et al.·Jul 8, 2019SaveLearn
Nπ-excited state contamination in nucleon 3-point functions using ChPTThe Nπ-state contribution to nucleon 3-pt functions involving the pseudoscalar density P(x) and the time component A4(x) of the axial vector current are computed to LO in ChPT. In case of the…Oliver Bar·Jul 7, 2019SaveLearn
New Nf=2 Pseudofermion Action for Monte-Carlo Simulation of Lattice Field Theory with Domain-Wall FermionsWe construct a novel Nf = 2 pseudofermion action for Monte-Carlo simulation of lattice gauge theory with domain-wall fermions (DWF), of which the effective four-dimensional lattice Dirac…Yu-Chih Chen, Ting-Wai Chiu·Jul 7, 2019SaveLearn
Interplay between SU(Nf) chiral symmetry, U(1)A axial anomaly and massless bosonsThe standard wisdom on the origin of massless bosons in the spectrum of a Quantum Field Theory (QFT) describing the interaction of gauge fields coupled to matter fields is based on two well known…Vicente Azcoiti·Jul 3, 2019SaveLearn
Hybrid static potential flux tubes from SU(2) and SU(3) lattice gauge theoryWe compute chromoelectric and chromomagnetic flux densities for hybrid static potentials in SU(2) and SU(3) lattice gauge theory. In addition to the ordinary static potential with quantum numbers…Lasse Mueller, Owe Philipsen, Christian Reisinger et al.·Jul 2, 2019SaveLearn
Hadron-Hadron Interactions from Nf=2+1+1 Lattice QCD: The ρ-resonanceWe present an investigation of the Rho-meson from Nf=2+1+1 flavour lattice QCD. The calculation is performed based on gauge configuration ensembles produced by the ETM collaboration with three…Markus Werner, Martin Ueding, Christopher Helmes et al.·Jul 2, 2019SaveLearn
Neutral B-meson mixing from full lattice QCD at the physical pointWe calculate the bag parameters for neutral B-meson mixing in and beyond the Standard Model, in full four-flavour lattice QCD for the first time. We work on gluon field configurations that include…R. J. Dowdall, C. T. H. Davies, R. R. Horgan et al.·Jul 1, 2019SaveLearn
On a first order transition in QCD with up, down and strange quarksWe consider the quark-mass dependence of the baryon octet and decuplet ground state masses. It is predicted that QCD dynamics implies a first order transition when increasing the strange quark mass…Xiao-Yu Guo, Yonggoo Heo, Matthias F. M. Lutz·Jul 1, 2019SaveLearn
Hadronic light-by-light contribution to the muon anomalous magnetic moment from lattice QCDWe report preliminary results for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment. Several ensembles using 2+1 flavors of Möbius domain-wall fermions,…Thomas Blum, Norman Christ, Masashi Hayakawa et al.·Jul 1, 2019SaveLearn