Isospin-breaking corrections to light leptonic decays in lattice QCD+QED at the physical pointWe report on the physical-point RBC/UKQCD calculation of the leading isospin-breaking corrections to light-meson leptonic decays. This is highly relevant for future precision tests in the flavour…Peter Boyle, Matteo Di Carlo, Felix Erben et al.·Dec 9, 2022SaveLearn
Overcoming exponential volume scaling in quantum simulations of lattice gauge theoriesReal-time evolution of quantum field theories using classical computers requires resources that scale exponentially with the number of lattice sites. Because of a fundamentally different…Christopher F. Kane, Dorota M. Grabowska, Benjamin Nachman et al.·Dec 9, 2022SaveLearn
Loop-string-hadron formulation of an SU(3) gauge theory with dynamical quarksTowards the goal of quantum computing for lattice quantum chromodynamics, we present a loop-string-hadron (LSH) framework in 1+1 dimensions for describing the dynamics of SU(3) gauge fields coupled…Saurabh V. Kadam, Indrakshi Raychowdhury, Jesse R. Stryker·Dec 8, 2022SaveLearn
Optimizing Shift Selection in Multilevel Monte Carlo for Disconnected Diagrams in Lattice QCDThe calculation of disconnected diagram contributions to physical signals is a computationally expensive task in Lattice QCD. To extract the physical signal, the trace of the inverse Lattice Dirac…Travis Whyte, Andreas Stathopoulos, Eloy Romero et al.·Dec 8, 2022SaveLearn
Mean field approximation for effective theories of lattice QCDFor the exploration of the phase diagram of QCD, effective Polyakov loop theories derived from lattice QCD provide a valuable tool in the heavy quark mass regime. In practice, the evaluation of these…Christoph Konrad, Owe Philipsen, Jonas Scheunert·Dec 8, 2022SaveLearn
Clifford Fourier Transforms in (2+1)D Lattice Simulations of Soliton PropagationsMonte Carlo simulation of solitonic phonon propagation on a 2D plane in Weyl fermion-sea is analyzed. We assume materials are filled with Weyl spinors located on 256× 256 2D lattice points,…Sadataka Furui, Serge Dos Santos·Dec 8, 2022SaveLearn
The influence of gauge field smearing on discretisation effectsWhen designing lattice actions, gauge field smearing is frequently used to define the lattice Dirac operator. Since the smearing procedure removes effects of ultraviolet fluctuations, the fermions…Andreas Risch, Stefan Schaefer, Rainer Sommer·Dec 7, 2022SaveLearn
Holography on the lattice: the string worldsheet perspectiveWe review the study, on the lattice, of the Green-Schwarz gauge-fixed string action describing worldsheet fluctuations about the minimal surface holographically dual to the null cusp Wilson loop,…Gabriel Bliard, Ilaria Costa, Valentina Forini·Dec 7, 2022SaveLearn
The chiral phase transition at non-zero imaginary baryon chemical potential for different numbers of quark flavoursThe so-called Columbia plot summarises the order of the QCD thermal transition as a function of the number of quark flavours and their masses. Recently, it was demonstrated that the first-order…Alfredo D'Ambrosio, Owe Philipsen, Reinhold Kaiser·Dec 7, 2022SaveLearn
QCD topology with electromagnetic fields and the axion-photon couplingThe introduction of non-orthogonal electric and magnetic fields in the QCD vacuum enhances the weight of topological sectors with a nonzero topological charge. For weak fields, there is a linear…Bastian Brandt, Francesca Cuteri, Gergely Endrődi et al.·Dec 7, 2022SaveLearn
Monopoles, spectra of overlap fermions, and eta-prime meson in external magnetic fieldsThe effects of external magnetic fields on monopoles, spectra of the overlap Dirac operator, instantons, and the mass of the eta-prime meson are examined by conducting lattice QCD simulations. The…Masayasu Hasegawa·Dec 6, 2022SaveLearn
Thermal phase transitions in rotating QCD with dynamical quarksRelativistic rotation causes a change of QCD critical temperatures. Various phenomenological and effective models predict a decrease of the critical temperatures in rotating QCD. Nevertheless,…V. V. Braguta, A. Yu. Kotov, A. A. Roenko et al.·Dec 6, 2022SaveLearn
Nuclear Transition in the Strong Coupling LimitLattice QCD at finite baryon chemical potential has the infamous sign problem which hinders Monte Carlo simulations. This can be remedied by a dual representation that makes the sign problem mild. In…Jangho Kim, Pratitee Pattanaik, Wolfgang Unger·Dec 6, 2022SaveLearn
Lattice QCD at non-zero temperature and densitySoon after the formulation of Quantum Chromodynamics in 1972 its regularization on Euclidean space-time lattices had been introduced by Kenneth Wilson. This paved ground for numerical studies of…Frithjof Karsch·Dec 6, 2022SaveLearn
The hadronic running of the electromagnetic coupling and electroweak mixing angleWe present results for the hadronic running of the electromagnetic coupling and the weak mixing angle from simulations of lattice QCD with Nf=2+1 flavours of O(a)-improved Wilson fermions. Using…Teseo San José, Hartmut Wittig, Marco Cè et al.·Dec 5, 2022SaveLearn
Error reduction using machine learning on Ising worm simulationWe develop a method to improve on the statistical errors for higher moments using machine learning techniques. We present here results for the dual representation of the Ising model with an external…Jangho Kim, Wolfgang Unger·Dec 5, 2022SaveLearn
Lattice determination of the topological susceptibility slope of 2d~CPN-1 models at large NWe compute the topological susceptibility slope , related to the second moment of the two-point correlator of the topological charge density, of 2d CPN-1 models for…Claudio Bonanno·Dec 5, 2022SaveLearn
Particle-dimer approach for the Roper resonance in a finite volumeWe propose a new finite-volume approach which implements two- and three-body dynamics in a transparent way based on an Effective Field Theory Lagrangian. The formalism utilizes a particle-dimer…Daniel Severt, Maxim Mai, Ulf-G. Meißner·Dec 5, 2022SaveLearn
QCD mesonic screening masses and restoration of chiral symmetry at high TWe present a strategy to study QCD non-perturbatively on the lattice at very high temperatures. This strategy exploits a non-perturbative, finite-volume, definition of the strong coupling constant to…Davide Laudicina, Mattia Dalla Brida, Leonardo Giusti et al.·Dec 5, 2022SaveLearn
Anomalous transport phenomena on the latticeThe interrelation between quantum anomalies and electromagnetic fields leads to a series of non-dissipative transport effects in QCD. In this work we study anomalous transport phenomena with lattice…Bastian B. Brandt, Francesca Cuteri, Gergely Endrődi et al.·Dec 5, 2022SaveLearn
Adjoint fermions at large-N on the latticeLattice simulations of Yang-Mills theories coupled with Nf flavours of fermions in the adjoint representation provide a way to probe the non-perturbative regime of a plethora of different physical…P. Butti, M. García Pérez, A. González-Arroyo et al.·Dec 5, 2022SaveLearn
The glueball spectrum with Nf=4 light fermionsWe investigate the glueball spectrum for Nf=4 fermions corresponding to low pion masses of mπ 250MeV. We do so by making use of configurations produced with maximally twisted fermions…Andreas Athenodorou, Jacob Finkenrath, Adam Lantos et al.·Dec 5, 2022SaveLearn
Equation of state and Taylor expansions at nonzero isospin chemical potentialWe compute the equation of state of isospin asymmetric QCD at zero and non-zero temperatures using direct simulations of lattice QCD with three dynamical flavors at physical quark masses. In addition…Bastian B. Brandt, Francesca Cuteri, Gergely Endrödi·Dec 2, 2022SaveLearn
Isovector Axial Form Factor of the Nucleon from Lattice QCDThe isovector axial form factor of the nucleon plays a key role in interpreting data from long-baseline neutrino oscillation experiments. We present a lattice QCD calculation of this form factor,…Jonna Koponen, Dalibor Djukanovic, Georg von Hippel et al.·Dec 2, 2022SaveLearn
The density of state method for first-order phase transitions in Yang-Mills theoriesLattice Field Theory can be used to study finite temperature first-order phase transitions in new, strongly-coupled gauge theories of phenomenological interest. Metastable dynamics arising in…David Mason, Biagio Lucini, Maurizio Piai et al.·Dec 2, 2022SaveLearn