Electroweak box diagram contribution for pion and kaon decay from lattice QCDOne of the sensitive probes of physics beyond the standard model is the test of the unitarity of the Cabbibo-Kobyashi-Maskawa (CKM) matrix. Current analysis of the first row is based on |Vud|…Jun-Sik Yoo, Tanmoy Bhattacharya, Rajan Gupta et al.·May 4, 2023SaveLearn
Normalizing flows for lattice gauge theory in arbitrary space-time dimensionApplications of normalizing flows to the sampling of field configurations in lattice gauge theory have so far been explored almost exclusively in two space-time dimensions. We report new algorithmic…Ryan Abbott, Michael S. Albergo, Aleksandar Botev et al.·May 3, 2023SaveLearn
Simulating Z2 lattice gauge theory on a quantum computerThe utility of quantum computers for simulating lattice gauge theories is currently limited by the noisiness of the physical hardware. Various quantum error mitigation strategies exist to reduce the…Clement Charles, Erik J. Gustafson, Elizabeth Hardt et al.·May 3, 2023SaveLearn
Numerical tests of the large charge expansionWe perform Monte-Carlo measurements of two and three point functions of charged operators in the critical O(2) model in 3 dimensions. Our results are compatible with the predictions of the large…Gabriel Cuomo, J. M. Viana Parente Lopes, José Matos et al.·Apr 30, 2023SaveLearn
An analogue to the pion decay constant in the multi-flavor Schwinger modelWe study the Schwinger model with N f ≥ 2 degenerate fermion flavors, by means of lattice simulations. We use dynamical Wilson fermions for N f = 2, and re-weighted quenched…Jaime Fabián Nieto Castellanos, Ivan Hip, Wolfgang Bietenholz·Apr 28, 2023SaveLearn
Generalized Parton Distributions from Lattice QCDIn recent years, there has been a breakthrough in lattice calculations of x-dependent partonic distributions. This encompasses also distributions describing the 3D structure of the nucleon, such as…Krzysztof Cichy, Shohini Bhattacharya, Martha Constantinou et al.·Apr 28, 2023SaveLearn
Magnetic operators in 2D compact scalar field theories on the latticeIn lattice compact gauge theories, we must impose the admissibility condition to have well-defined topological sectors. The admissibility condition, however, usually forbids the presence of magnetic…Motokazu Abe, Okuto Morikawa, Soma Onoda et al.·Apr 28, 2023SaveLearn
The magnetized (2+1)-dimensional Gross-Neveu model at finite densityWe perform a lattice study of the (2+1)-dimensional Gross-Neveu model in a background magnetic field B and at non-zero chemical potential μ. The complex-action problem arising in our…Julian J. Lenz, Michael Mandl, Andreas Wipf·Apr 28, 2023SaveLearn
Spectral density of the Dirac-Ginsparg-Wilson operator, chiral U(1)A anomaly, and analyticity in the high temperature phase of QCDUsing general properties of the Q=0 topological sector we previously argued that a vector-like theory, with chiral U(1)A anomaly, and exact non-Abelian chiral symmetry, should exhibit divergent…Vicente Azcoiti·Apr 28, 2023SaveLearn
Gauge fixing and gauge correlations in noncompact Abelian gauge modelsWe investigate some general properties of linear gauge fixings and gauge-field correlators in lattice models with noncompact U(1) gauge symmetry. In particular, we show that, even in the presence of…Claudio Bonati, Andrea Pelissetto, Ettore Vicari·Apr 27, 2023SaveLearn
Higher partial wave contamination in finite-volume 1-to-2 transitionsIn their seminal work, Lellouch and L\"uscher derived a conversion factor relating a finite-volume matrix element, calculable using numerical lattice QCD, with the infinite-volume decay amplitude for…Toby Peterken, Maxwell T. Hansen·Apr 27, 2023SaveLearn
Finite-volume energy shift of the three-nucleon ground stateA perturbative calculation of the three-nucleon ground-state energy shift in a finite volume is carried out within the non-relativistic effective theory. The energy shift is evaluated up to and…Rishabh Bubna, Fabian Müller, Akaki Rusetsky·Apr 26, 2023SaveLearn
QCD Anderson transition with overlap valence quarks on a twisted-mass seaIn this work we probe the QCD Anderson transition by studying spectral distributions of the massless overlap operator on gauge configurations created by the twisted mass at finite temperature…Robin Kehr, Dominik Smith, Lorenz von Smekal·Apr 26, 2023SaveLearn
Infrared fixed point and anomalous dimensions in a composite Higgs modelWe use lattice simulations and the continuous renormalization-group method, based on the gradient flow, to study a candidate theory of composite Higgs and a partially composite top. The model is an…Anna Hasenfratz, Ethan T. Neil, Yigal Shamir et al.·Apr 23, 2023SaveLearn
Pion screening mass at finite chemical potentialWe present a method to compute the responses of meson screening masses to the chemical potential by Taylor expanding the correlator using lattice QCD simulation. We start by comparing the free theory…Rishabh Thakkar, Prasad Hegde·Apr 21, 2023SaveLearn
Gauge-equivariant pooling layers for preconditioners in lattice QCDWe demonstrate that gauge-equivariant pooling and unpooling layers can perform as well as traditional restriction and prolongation layers in multigrid preconditioner models for lattice QCD. These…Christoph Lehner, Tilo Wettig·Apr 20, 2023SaveLearn
baryon spectroscopy in lattice QCDA variational analysis is performed within the framework of lattice QCD to extract the masses of the spin-3/2 positive parity + baryons, including radial excitations. 2+1 flavour…Liam Hockley, Waseem Kamleh, Derek Leinweber et al.·Apr 20, 2023SaveLearn
Quark Chromo-Electric Dipole Moment Operator on the LatticeWe present a lattice QCD study of the contribution of the isovector quark chromo-electric dipole moment (qcEDM) operator to the nucleon electric dipole moments (nEDM). The calculation was carried out…Tanmoy Bhattacharya, Vincenzo Cirigliano, Rajan Gupta et al.·Apr 19, 2023SaveLearn
Monopoles of the Dirac type and color confinement in QCD -- Study of the continuum limitNon-Abelian gauge fields having a line-singularity of the Dirac type lead us to violation of the non-Abelian Bianchi identity. The violation as an operator is equivalent to violation of Abelian-like…Tsuneo Suzuki·Apr 18, 2023SaveLearn
Radiative corrections to leptonic decays using infinite-volume reconstructionLattice QCD calculations of leptonic decay constants have now reached sub-percent precision so that isospin-breaking corrections, including QED effects, must be included to fully exploit this…Norman H. Christ, Xu Feng, Lu-Chang Jin et al.·Apr 17, 2023SaveLearn
Critical endpoint of (3+1)-dimensional finite density Z3 gauge-Higgs model with tensor renormalization groupThe critical endpoint of the (3+1)-dimensional Z3 gauge-Higgs model at finite density is determined by the tensor renormalization group method. This work is an extension of the previous one on the…Shinichiro Akiyama, Yoshinobu Kuramashi·Apr 17, 2023SaveLearn
Evidence of the Schwinger mechanism from lattice QCDIn quantum chromodynamics (QCD), gluons acquire a mass scale through the action of the Schwinger mechanism. This mass emerges as a result of the dynamical formation of massless bound-states of gluons…Mauricio Narciso Ferreira·Apr 16, 2023SaveLearn
Singlets in gauge theories with fundamental matterWe provide the first determination of the mass of the lightest flavor-singlet pseudoscalar and scalar bound states (mesons), in the Sp(4) Yang-Mills theory coupled to two flavors of…Ed Bennett, Ho Hsiao, Jong-Wan Lee et al.·Apr 14, 2023SaveLearn
Weak decay constants of the neutral pseudoscalar mesons from lattice QCD+QEDWith increasing requirements for greater precision, it becomes essential to describe the effects of isospin breaking induced by both quark masses and electro-magnetic effects. In this work we perform…Z. R. Kordov, R. Horsley, W. Kamleh et al.·Apr 12, 2023SaveLearn
A variational Monte Carlo algorithm for lattice gauge theories with continuous gauge groups: a study of (2+1)-dimensional compact QED with dynamical fermions at finite densityLattice gauge theories coupled to fermionic matter account for many interesting phenomena in both high energy physics and condensed matter physics. Certain regimes, e.g. at finite fermion density,…Julian Bender, Patrick Emonts, J. Ignacio Cirac·Apr 12, 2023SaveLearn