Continuous renormalization group β function from lattice simulationsWe present a real-space renormalization group transformation with continuous scale change to calculate the continuous renormalization group β function in non-perturbative lattice simulations. Our…Anna Hasenfratz, Oliver Witzel·Oct 14, 2019SaveLearn
Report on the 2019 Lattice Diversity and Inclusivity SurveyWe report on the results of a survey to assess diversity and inclusivity in the Lattice community as one of the duties of a newly formed Committee on Diversity and Inclusivity in the Lattice…Christopher Aubin, Gunnar Bali, Luigi Del Debbio et al.·Oct 14, 2019SaveLearn
Hadronic vacuum polarization in finite volume using NNLO ChPTWe present results for the leading hadronic contribution to the muon g-2 from configurations with 2+1+1 flavors of HISQ quarks. The ensembles have been generated by the MILC collaboration at three…C Aubin, T Blum, M Golterman et al.·Oct 11, 2019SaveLearn
Partial Wave Mixing in Hamiltonian Effective Field TheoryThe spectrum of excited states observed in the finite volume of lattice QCD is governed by the discrete symmetries of the cubic group. This finite group permits the mixing of orbital angular momentum…Yan Li, Jia-Jun Wu, Curtis D. Abell et al.·Oct 11, 2019SaveLearn
Bottomonium resonances with I = 0 from lattice QCD correlation functions with static and light quarksWe discuss, how to study I = 0 quarkonium resonances decaying into pairs of heavy-light mesons using static potentials from lattice QCD. These static potentials can be obtained from a set of…Pedro Bicudo, Marco Cardoso, Nuno Cardoso et al.·Oct 10, 2019SaveLearn
Continuum Goldstone spectrum of two-color QCD at finite density with staggered quarksWe carry out lattice simulations of two-color QCD and spectroscopy at finite density with two flavors of rooted-staggered quarks and a diquark source term. As in a previous four-flavor study, for…Jonas Wilhelm, Lukas Holicki, Dominik Smith et al.·Oct 10, 2019SaveLearn
Phase diagram, symmetry breaking, and critical behavior of three-dimensional lattice multiflavor scalar chromodynamicsWe study the nature of the phase diagram of three-dimensional lattice models in the presence of nonabelian gauge symmetries. In particular, we consider a paradigmatic model for the Higgs mechanism,…Claudio Bonati, Andrea Pelissetto, Ettore Vicari·Oct 9, 2019SaveLearn
Lepton anomalous magnetic moments in Lattice QCD+QEDWe present a lattice calculation of the Hadronic Vacuum Polarization (HVP) contribution to the anomalous magnetic moments of the electron, ae HVP, the muon, aμ HVP, and the tau,…D. Giusti, S. Simula·Oct 9, 2019SaveLearn
Electromagnetic finite-size effects to the hadronic vacuum polarisationIn order to reach (sub-)per cent level precision in lattice calculations of the hadronic vacuum polarisation, isospin breaking corrections must be included. This requires introducing QED on the…Nils Hermansson-Truedsson, Johan Bijnens, James Harrison et al.·Oct 8, 2019SaveLearn
Light- and strange-quark mass dependence of the ρ(770) meson propertiesFrom an analysis of recent (I=J=1)-ππ-phase-shift and pseudoscalar-meson decay-constant lattice data on two distinct chiral trajectories, where either the sum of the up, down and strange quark…R. Molina, J. Ruiz de Elvira·Oct 4, 2019SaveLearn
χSF near the electroweak scaleWe employ the chirally rotated Schrödinger functional (χSF) to study two-point fermion bilinear correlation functions used in the determination of ZA,V,S,P,T on a series of well-tuned…Isabel Campos, Mattia Dalla Brida, Giulia Maria de Divitiis et al.·Oct 4, 2019SaveLearn
Lattice QCD study of static quark and antiquark correlations via entanglement entropiesWe study the color correlation between static quark and antiquark (q q) in the confined phase via reduced density matrices ρ defined in color space. We adopt the standard Wilson gauge action…Toru T. Takahashi, Yoshiko Kanada-En'yo·Oct 2, 2019SaveLearn
Rho resonance, timelike pion form factor, and implications for lattice studies of the hadronic vacuum polarisationWe study isospin-1 P-wave ππ scattering in lattice QCD with two flavours of O(a) improved Wilson fermions. For pion masses ranging from mπ=265 MeV to mπ=437 MeV, we determine the energy…Felix Erben, Jeremy R. Green, Daniel Mohler et al.·Oct 2, 2019SaveLearn
Lattice QCD matrix elements for the Bs0-Bs0 width difference beyond leading orderPredicting the Bs0-Bs0 width difference ΔΓs relies on the heavy quark expansion and on hadronic matrix elements of ΔB=2 operators. We present the first lattice QCD results for matrix…Christine T. H. Davies, Judd Harrison, G. Peter Lepage et al.·Oct 2, 2019SaveLearn
Matrix elements of bound states in a finite volumeRecently, a framework was developed for studying form factors of two-body states probed with an external current. Finite volume matrix elements that may be computed via lattice QCD are converted to…Andrew W. Jackura·Oct 2, 2019SaveLearn
The hadronic vacuum polarization contribution to (gμ-2): Lattice QCD+QED calculationsThe anomalous magnetic moment of the muon aμ is one of the most accurate quantities in Particle Physics. The long-standing discrepancy of about 3.7 standard deviations between the experimental…Davide Giusti, Silvano Simula·Oct 1, 2019SaveLearn
Review on novel methods for lattice gauge theoriesFormulating gauge theories on a lattice offers a genuinely non-perturbative way of studying quantum field theories, and has led to impressive achievements. In particular, it significantly deepened…Mari Carmen Bañuls, Krzysztof Cichy·Oct 1, 2019SaveLearn
Towards a holographic description of cosmology: Renormalisation of the energy-momentum tensor of the dual QFTIn the holographic approach to cosmology, cosmological observables are described in terms of correlators of a three-dimensional boundary quantum field theory. As a concrete model, we study the 3d…Joseph K. L. Lee, Luigi Del Debbio, Andreas Jüttner et al.·Sep 30, 2019SaveLearn
Long-distance Contributions to Neutrinoless Double Beta Decay π- π+ e eNeutrinoless double beta decay, if detected, would prove that neutrinos are Majorana fermions and provide the direct evidence for lepton number violation. If such decay would exist in nature, then…Xin-Yu Tuo, Xu Feng, Lu-Chang Jin·Sep 30, 2019SaveLearn
Meson-Nucleon Scattering Amplitudes from Lattice QCDLattice QCD calculations of resonant meson-meson scattering amplitudes have improved significantly due to algorithmic and computational advances. However, progress in meson-nucleon scattering has…John Bulava·Sep 28, 2019SaveLearn
Sp(4) gauge theories on the lattice: Nf=2 dynamical fundamental fermionsWe perform lattice studies of the gauge theory with Sp(4) gauge group and two flavours of (Dirac) fundamental matter. The global SU(4) symmetry is spontaneously broken by the fermion condensate. The…Ed Bennett, Deog Ki Hong, Jong-Wan Lee et al.·Sep 27, 2019SaveLearn
Finite size and cut-off effects on the Roberge-Weiss transition in Nf=2 QCD with Staggered fermionsIn the absence of a genuine solution to the sign problem, lattice studies at imaginary quark chemical potential are an important tool to constrain the QCD phase diagram. We calculate the values of…Owe Philipsen, Alessandro Sciarra·Sep 26, 2019SaveLearn
Lattice investigation of the phase diagram of the 1+1 dimensional Gross-Neveu model at finite number of fermion flavorsWe explore the phase structure of the 1+1 dimensional Gross-Neveu model at finite number of fermion flavors using lattice field theory. Besides a chirally symmetric phase and a homogeneously broken…Laurin Pannullo, Julian Lenz, Marc Wagner et al.·Sep 25, 2019SaveLearn
Machine-Learning Prediction for Quasi-PDF Matrix ElementsThere have been rapid developments in the direct calculation in lattice QCD (LQCD) of the Bjorken-x dependence of hadron structure through large-momentum effective theory (LaMET). LaMET overcomes…Rui Zhang, Zhouyou Fan, Ruizi Li et al.·Sep 24, 2019SaveLearn
The ε-regime of dilaton chiral perturbation theoryThe ε-regime of dilaton chiral perturbation theory is introduced. We compute the dilaton mass, the chiral condensate and the topological susceptibility in the ε-regime, as a function of the…Taro V. Brown, Maarten Golterman, Svend Krøjer et al.·Sep 24, 2019SaveLearn