Lattice Improvement in Lattice Effective Field TheoryLattice calculations using the framework of effective field theory have been applied to a wide range few-body and many-body systems. One of the challenges of these calculations is to remove…Nico Klein, Dean Lee, Ulf-G. Meißner·Jul 11, 2018SaveLearn
Probing the tensor structure of lattice three-gluon vertex in Landau gaugeIn this paper we test an approximate method that is often used in lattice studies of the Landau gauge three-gluon vertex. The approximation consists in describing the lattice correlator with tensor…Milan Vujinovic, Tereza Mendes·Jul 10, 2018SaveLearn
New MC determination of the critical coupling in ϕ42 theoryWe investigate the non-perturbative features of ϕ42 theory in two dimensions, using Monte Carlo lattice methods. In particular we determine the ratio f0 g/μ2, where g is the…Simone Bronzin, Barbara De Palma, Marco Guagnelli·Jul 9, 2018SaveLearn
Two-current correlations in the pion on the latticeWe perform a systematic study of the correlation functions of two quark currents in a pion using lattice QCD. We obtain good signals for all but one of the relevant Wick contractions of quark fields.…Gunnar S. Bali, Peter Bruns, Luca Castagnini et al.·Jul 9, 2018SaveLearn
Asymptotic behavior of Nambu-Bethe-Salpeter wave functions for scalar systems with a bound stateWe study the asymptotic behaviors of the Nambu-Bethe-Salpeter (NBS) wave functions, which are important for the HAL QCD potential method to extract hadron interactions, in the case that a bound state…Shinya Gongyo, Sinya Aoki·Jul 9, 2018SaveLearn
Lattice QCD: Flavor Physics and SpectroscopyWe review highlights of recent results on the hadron spectrum and flavor physics from lattice QCD. We also discuss recent rapid progress on the muon anomalous magnetic moment.Takashi Kaneko·Jul 9, 2018SaveLearn
Roberge-Weiss endpoint and chiral symmetry restoration in Nf = 2+1 QCDWe investigate the fate of the Roberge-Weiss endpoint transition and its connection with the restoration of chiral symmetry as the chiral limit of Nf = 2+1 QCD is approached. We adopt a stout…Claudio Bonati, Enrico Calore, Massimo D'Elia et al.·Jul 5, 2018SaveLearn
Finite Density QED1+1 Near Lefschetz ThimblesOne strategy for reducing the sign problem in finite-density field theories is to deform the path integral contour from real to complex fields. If the deformed manifold is the appropriate combination…Andrei Alexandru, Gokce Basar, Paulo F. Bedaque et al.·Jul 5, 2018SaveLearn
On U(1) Gauge Theory Transfer-Matrix in Fourier BasisThe properties of the transfer-matrix of U(1) lattice gauge theory in the Fourier basis are explored. Among other statements it is shown: 1) the transfer-matrix is block-diagonal, 2) all consisting…Narges Vadood, Amir H. Fatollahi·Jul 4, 2018SaveLearn
Effects of a strong magnetic field on the QCD flux tubeIn this work we investigate the effect of an external magnetic field B on the shape of flux tubes in QCD by means of lattice simulations, performed with Nf=2+1 flavors of stout improved dynamical…Claudio Bonati, Salvatore Calì, Massimo D'Elia et al.·Jul 4, 2018SaveLearn
Euclidean correlators at imaginary spatial momentum and their relation to the thermal photon emission rateThe photon emission rate of a thermally equilibrated system is determined by the imaginary part of the in-medium retarded correlator of the electromagnetic current transverse to the spatial momentum…Harvey B. Meyer·Jul 2, 2018SaveLearn
Simulating twisted mass fermions at physical light, strange and charm quark massesWe present the QCD simulation of the first gauge ensemble of two degenerate light quarks, a strange and a charm quark with all quark masses tuned to their physical values within the twisted mass…Constantia Alexandrou, Simone Bacchio, Panagiotis Charalambous et al.·Jul 2, 2018SaveLearn
Lattice QCD Method To Study Hadron Mass Is Not CorrectSince the numerical path integration in the lattice QCD involves quark and gluon fields (not hadron fields) the lattice QCD cannot calculate any hadronic observable. Because of this reason the…Gouranga C Nayak·Jul 1, 2018SaveLearn
Lattice QCD study of doubly-charmed strange baryonsWe present the energy spectra of the low lying doubly-charmed baryons using lattice quantum chromodynamics. We precisely predict the ground state mass of the charmed-strange Omega(cc) (1/2+) baryon…Nilmani Mathur, M. Padmanath·Jun 30, 2018SaveLearn
Transversity parton distribution functions from lattice QCDWe present the first direct calculation of the transversity parton distribution function within the nucleon from lattice QCD. The calculation is performed using simulations with the light quark mass…Constantia Alexandrou, Krzysztof Cichy, Martha Constantinou et al.·Jun 30, 2018SaveLearn
Photon operators for lattice gauge theoryPhoton operators with the proper JPC quantum numbers are constructed, including one made of elementary plaquettes. In compact U(1) lattice gauge theory, these explicit photon operators are shown…Randy Lewis, R. M. Woloshyn·Jun 29, 2018SaveLearn
Exploratory lattice QCD study of the rare kaon decay K+π+ννIn Ref [1] we have presented the results of an exploratory lattice QCD computation of the long-distance contribution to the K+π+νν decay amplitude. In the present paper we describe the…Ziyuan Bai, Norman H. Christ, Xu Feng et al.·Jun 29, 2018SaveLearn
Testing the event-chain algorithm in asymptotically free modelsWe apply the event-chain algorithm proposed by Bernard, Krauth and Wilson in 2009 to toy models of lattice QCD. We give a formal prove of stability of the algorithm. We study its performance at the…Martin Hasenbusch, Stefan Schaefer·Jun 29, 2018SaveLearn
On observable particles in theories with a Brout-Englert-Higgs effectEven at weak coupling the physical, observable spectrum of gauge theories with a Brout-Englert-Higgs effect can deviate from the elementary one of perturbation theory. This can be analytically…Pascal Törek, Axel Maas·Jun 29, 2018SaveLearn
Adiabatic continuity and confinement in supersymmetric Yang-Mills theory on the latticeThis work is a step towards merging the ideas that arise from semi-classical methods in continuum QFT with analytic/numerical lattice field theory. In this context, we consider Yang-Mills theories…Georg Bergner, Stefano Piemonte, Mithat Ünsal·Jun 28, 2018SaveLearn
Quark contribution to the proton spin from 2+1+1-flavor lattice QCDWe present the first chiral-continuum extrapolated up, down and strange quark spin contribution to the proton spin using lattice QCD. For the connected contributions, we use eleven ensembles of…Huey-Wen Lin, Rajan Gupta, Boram Yoon et al.·Jun 27, 2018SaveLearn
Isovector Charges of the Nucleon from 2+1+1-flavor Lattice QCDWe present high statistics results for the isovector charges gu-dA, gu-dS and gu-dT of the nucleon. Calculations were carried out on eleven ensembles of gauge configurations…Rajan Gupta, Yong-Chull Jang, Boram Yoon et al.·Jun 23, 2018SaveLearn
Gauss's Law, Duality, and the Hamiltonian Formulation of U(1) Lattice Gauge TheoryQuantum computers have the potential to explore the vast Hilbert space of entangled states that play an important role in the behavior of strongly interacting matter. This opportunity motivates…David B. Kaplan, Jesse R. Stryker·Jun 22, 2018SaveLearn
Higher-order hadronic-vacuum-polarization contribution to the muon g-2 from lattice QCDWe introduce a new method for calculating the O(α3) hadronic-vacuum-polarization contribution to the muon anomalous magnetic moment from ab-initio lattice QCD. We first derive…Bipasha Chakraborty, Christine T. H. Davies, Jonna Koponen et al.·Jun 21, 2018SaveLearn
Topological fermion condensates from anomaliesWe show that a class of fermion theory formulated on a compact, curved manifold will generate a condensate whose magnitude is determined only by the volume and Euler characteristic of the space. The…Simon Catterall, Jack Laiho, Judah Unmuth-Yockey·Jun 20, 2018SaveLearn