Emergence of the rho resonance from the HAL QCD potentialIn this article, we report the resonance study using the HAL QCD method. We calculate the I=1 π π potential at mπ ≈ 0.41 GeV by a combination of the one-end trick,…Yutaro Akahoshi, Sinya Aoki, Takumi Doi·Nov 30, 2021SaveLearn
Three-dimensional Gross-Neveu model with two flavors of staggered fermionsWe introduce a strongly interacting lattice field theory model containing two flavors of massless staggered fermions with two kinds of interactions: (1) a lattice current-current interaction, and (2)…Sandip Maiti, Debasish Banerjee, Shailesh Chandrasekharan et al.·Nov 30, 2021SaveLearn
Single static-quark system above Tc investigated by energy-momentum tensor in SU(3) Yang-Mills theoryWe investigate the distribution of energy-momentum tensor (EMT) around a static quark in the deconfined phase of SU(3) Yang-Mills theory. The EMT defined through the gradient-flow formalism is used…Masakiyo Kitazawa, Ryosuke Yanagihara, Masayuki Asakawa et al.·Nov 30, 2021SaveLearn
Color superconductivity in a small box: a complex Langevin studyIt is expected that the color superconductivity (CSC) phase appears in QCD at low temperature and high density. On the basis of the lattice perturbation theory, a possible parameter region in which…Shoichiro Tsutsui, Yuhma Asano, Yuta Ito et al.·Nov 30, 2021SaveLearn
Lattice artefacts on the Landau gauge gluon propagator from hypercubic tensor representationsLattice tensor representations are used to investigate the lattice Landau gauge gluon propagator for the 4-dimensional pure SU(3) Yang-Mills gauge theory. Due to the different symmetry structure of…Guilherme Catumba, Orlando Oliveira, Paulo J. Silva·Nov 29, 2021SaveLearn
Implementation of the conjugate gradient algorithm for heterogeneous systemsLattice QCD calculations require significant computational effort, with the dominant fraction of resources typically spent in the numerical inversion of the Dirac operator. One of the simplest…Salvatore Cali, William Detmold, Grzegorz Korcyl et al.·Nov 29, 2021SaveLearn
Gradient flow scale-setting with Nf=2+1+1 Wilson-clover twisted-mass fermionsWe present a determination of the gradient flow scales w0, t0 and t0/w0 in isosymmetric QCD, making use of the gauge ensembles produced by the Extended Twisted Mass Collaboration…Constantia Alexandrou, Simone Bacchio, Georg Bergner et al.·Nov 29, 2021SaveLearn
Taylor expansions and Pad\'e approximations for Lefschetz thimbles and beyondDeforming the domain of integration after complexification of the field variables is an intriguing idea to tackle the sign problem. In thimble regularization the domain of integration is deformed…Kevin Zambello, Francesco Di Renzo, Simran Singh·Nov 29, 2021SaveLearn
Estimates for the lightest baryon masses in N = 1 supersymmetric Yang-Mills theoryN = 1 supersymmetric Yang-Mills theory describes gluons interacting with gluinos, which are spin-12 Majorana particles in the adjoint representation of the gauge group. In…Sajid Ali, Georg Bergner, Camilo Lopez et al.·Nov 29, 2021SaveLearn
Worldvolume tempered Lefschetz thimble method and its error estimationThe worldvolume tempered Lefschetz thimble method (WV-TLTM) is an algorithm towards solving the sign problem, where hybrid Monte Carlo updates are performed on a continuous accumulation of flowed…Masafumi Fukuma, Nobuyuki Matsumoto, Yusuke Namekawa·Nov 29, 2021SaveLearn
The basics and applications of the tempered Lefschetz thimble method for the numerical sign problemThe numerical sign problem has long been a major obstacle to first-principles calculations in various important fields of physics. We report that the recently proposed algorithm, tempered Lefschetz…Masafumi Fukuma, Nobuyuki Matsumoto·Nov 29, 2021SaveLearn
Perturbative predictions for color superconductivity on the latticeWe develop a new method to investigate color superconductivity (CSC) on the lattice based on the Thouless criterion, which amounts to solving the linearized gap equation without imposing any ansatz…Takeru Yokota, Yuhma Asano, Yuta Ito et al.·Nov 29, 2021SaveLearn
Progress in the determination of Mellin moments of the pion LCDA using the HOPE methodThe pion light-cone distribution amplitude (LCDA) is a central non-perturbative object of interest for the calculation of high-energy exclusive processes in quantum chromodynamics. In this article,…William Detmold, Anthony V. Grebe, Issaku Kanamori et al.·Nov 29, 2021SaveLearn
Progress in Sp(2N) lattice gauge theoriesLattice studies of gauge theories with symplectic gauge groups provide valuable information about gauge dynamics, and complement the results of lattice investigations focused on unitary gauge groups.…Ed Bennett, Jack Holligan, Deog Ki Hong et al.·Nov 29, 2021SaveLearn
Anomaly cancellation condition in lattice effective electroweak theoryThe anomaly cancellation is at the basis of the perturbative consistence of the Standard Model and it provides a partial explanation of charge quantization. We consider an effective Electroweak…Vieri Mastropietro·Nov 29, 2021SaveLearn
Non-Perturbative Bounds for Semileptonic Decays in Lattice QCDWe present a new method aiming at a non-perturbative, model-independent determination of the momentum dependence of the form factors entering semileptonic decays using unitarity and analyticity…Matteo Di Carlo, Guido Martinelli, Manuel Naviglio et al.·Nov 29, 2021SaveLearn
The gradient flow at higher orders in perturbation theoryVarious results for higher-order perturbative calculations in the gradient-flow formalism are reviewed, including the gradient-flow beta function and the small-flow-time expansion of the hadronic…Robert Harlander·Nov 29, 2021SaveLearn
ππ scattering in partially-quenched twisted-mass chiral perturbation theoryWe study pion-pion scattering in partially-quenched twisted-mass lattice QCD using chiral perturbation theory. The specific partially-quenched setup corresponds to that used in numerical lattice QCD…Zachary T. Draper, Stephen R. Sharpe·Nov 27, 2021SaveLearn
The lightest D0 resonance from lattice QCDWe recently presented elastic I=1/2 Dπ scattering from lattice QCD at mπ = 239 MeV. The amplitude features a pole corresponding to a mass m ≈ 2200 MeV and a width $ ≈…Nicolas Lang·Nov 27, 2021SaveLearn
Space-time symmetric qubit regularization of the asymptotically free two-dimensional O(4) modelWe explore if space-time symmetric lattice field theory models with a finite Hilbert space per lattice site can reproduce asymptotic freedom in the two-dimensional O(4) model. We focus on a simple…Junzhe Zhou, Hersh Singh, Tanmoy Bhattacharya et al.·Nov 27, 2021SaveLearn
Nucleon Charges and Sigma Terms from Nf=2+1 QCDWe report on recent progress of our analysis of the nucleon sigma terms, as well as the singlet scalar, axial and tensor nucleon charges. These are determined employing the CLS gauge ensembles, which…Daniel Jenkins, Sara Collins, Gunnar Bali·Nov 26, 2021SaveLearn
An Euclidean representation of Majorana spinsAn Euclidean representation of bosonized Majorana fermions, prior to imposing constraints, is derived in three space-time dimensons. The difference with the standard three dimensional Ising system is…Jacek Wosiek·Nov 26, 2021SaveLearn
Quark-gluon vertex with 2 flavours of O(a) improved Wilson fermionsWe study the Landau-gauge quark-gluon vertex with 2 flavours of O(a)improved Wilson fermions, for several lattice spacings and quark masses. In the limit of vanishing gluon momentum, we find that all…Ayse Kızılersü, Orlando Oliveira, Paulo Silva et al.·Nov 26, 2021SaveLearn
Lattice QCD with an inhomogeneous magnetic field backgroundThe magnetic fields generated in non-central heavy-ion collisions are among the strongest fields produced in the Universe, reaching magnitudes comparable to the scale of the strong interactions.…B. B. Brandt, F. Cuteri, G. Endrődi et al.·Nov 25, 2021SaveLearn
The SU(N) running coupling in the twisted gradient flow scheme and volume independenceWe report on an ongoing study of the running coupling of SU(N) pure Yang-Mills theory in the twisted gradient flow scheme (TGF). The study exploits the idea that twisted boundary conditions reduce…Jorge Luis Dasilva Golan, Margarita Garcia Perez, Alberto Ramos·Nov 25, 2021SaveLearn