Dual simulation of a Polyakov loop model at finite baryon density: correlations and screening massesComputations of screening masses in finite-temperature QCD at finite density are plagued by the sign problem and have been performed so far with an imaginary chemical potential. Here, we use a dual…O. Borisenko, V. Chelnokov, E. Mendicelli et al.·Sep 12, 2023SaveLearn
Real time evolution of scalar fields with kernelled Complex Langevin equationThe real time evolution of a scalar field in 0+1 dimensions is investigated on a complex time contour. The path integral formulation of the system has a sign problem, which is circumvented using the…Nina Maria Lampl, Dénes Sexty·Sep 12, 2023SaveLearn
Application of the path optimization method to a discrete spin systemThe path optimization method, which is proposed to control the sign problem in quantum field theories with continuous degrees of freedom by machine learning, is applied to a spin model with discrete…Kouji Kashiwa, Yusuke Namekawa, Akira Ohnishi et al.·Sep 12, 2023SaveLearn
Nucleon axial and pseudoscalar form factors using twisted-mass fermion ensembles at the physical pointWe compute the nucleon axial and pseudoscalar form factors using three Nf=2+1+1 twisted mass fermion ensembles with all quark masses tuned to approximately their physical values. The values of the…Constantia Alexandrou, Simone Bacchio, Martha Constantinou et al.·Sep 11, 2023SaveLearn
Beyond Generalized Eigenvalues in Lattice Quantum Field TheoryTwo analysis techniques, the generalized eigenvalue method (GEM) or Prony's (or related) method (PM), are commonly used to analyze statistical estimates of correlation functions produced in lattice…George T. Fleming·Sep 10, 2023SaveLearn
Low-lying baryon masses using twisted mass fermions ensembles at the physical pion massWe investigate the low-lying baryon spectrum using three Nf=2+1+1 ensembles simulated with physical values of the quark masses and lattice spacings of 0.080, 0.069, and 0.057 fm. The ensembles are…Constantia Alexandrou, Simone Bacchio, Georgios Christou et al.·Sep 8, 2023SaveLearn
Non-perturbative renormalisation and improvement of non-singlet tensor currents in Nf=3 QCDHadronic matrix elements involving tensor currents play an important r\ole in decays that allow to probe the consistency of the Standard Model via precision lattice QCD calculations. The non-singlet…L. Chimirri, P. Fritzsch, J. Heitger et al.·Sep 8, 2023SaveLearn
Non-Perturbative Simulations of Quantum Field Theories using Complex Langevin DynamicsNon-perturbative formulations of field theories are essential to capture intriguing physical phenomena, including confinement in QCD, spontaneous supersymmetry breaking, and dynamical…Arpith Kumar·Sep 6, 2023SaveLearn
Status of next-generation b p, , c form-factor calculationsI present preliminary results of next-generation lattice-QCD calculations of the b p, b , and b c form factors based on RBC/UKQCD gauge-field…Stefan Meinel·Sep 4, 2023SaveLearn
A new technique to incorporate multiple fermion flavors in tensor renormalization group method for lattice gauge theoriesWe propose a new technique to incorporate multiple fermion flavors in the tensor renormalization group method for lattice gauge theories, where fermions are treated by the Grassmann tensor network…Atis Yosprakob, Jun Nishimura, Kouichi Okunishi·Sep 4, 2023SaveLearn
Long-distance contribution to εK from lattice QCDA lattice QCD approach to the calculation of the long-distance contributions to εK is presented. This parameter describes indirect CP violation in Kππ decay. While the…Ziyuan Bai, Norman H. Christ, Joseph M. Karpie et al.·Sep 3, 2023SaveLearn
Advances in machine-learning-based sampling motivated by lattice quantum chromodynamicsSampling from known probability distributions is a ubiquitous task in computational science, underlying calculations in domains from linguistics to biology and physics. Generative machine-learning…Kyle Cranmer, Gurtej Kanwar, Sébastien Racanière et al.·Sep 3, 2023SaveLearn
Signal-to-noise improvement through neural network contour deformations for 3D SU(2) lattice gauge theoryComplex contour deformations of the path integral have been demonstrated to significantly improve the signal-to-noise ratio of observables in previous studies of two-dimensional gauge theories with…William Detmold, Gurtej Kanwar, Yin Lin et al.·Sep 1, 2023SaveLearn
Lattice QCD Calculation of Electroweak Box Contributions to Superallowed Nuclear and Neutron Beta DecaysWe present the first lattice QCD calculation of the universal axial γ W-box contribution γ WVA to both superallowed nuclear and neutron beta decays. This contribution…Peng-Xiang Ma, Xu Feng, Mikhail Gorchtein et al.·Aug 31, 2023SaveLearn
Un-screened forces in Quark-Gluon Plasma?We study the correlator of temporal Wilson lines at non-zero temperature in 2+1 flavor lattice QCD with the aim to define the heavy quark-antiquark potential at non-zero temperature. For temperatures…Alexei Bazavov, Daniel Hoying, Rasmus N. Larsen et al.·Aug 31, 2023SaveLearn
One-loop matching of the CP-odd three-gluon operator to the gradient flowThe calculation of the neutron electric dipole moment within effective field theories for physics beyond the Standard Model requires non-perturbative hadronic matrix elements of effective operators…Òscar L. Crosas, Christopher J. Monahan, Matthew D. Rizik et al.·Aug 30, 2023SaveLearn
Investigating how to simulate lattice gauge theories on a quantum computerQuantum computers have the potential to expand the utility of lattice gauge theory to investigate non-perturbative particle physics phenomena that cannot be accessed using a standard Monte Carlo…Emanuele Mendicelli·Aug 29, 2023SaveLearn
Eigenstate Thermalization in 2+1 dimensional SU(2) Lattice Gauge TheoryWe present preliminary numerical evidence for the hypothesis that the Hamiltonian SU(2) gauge theory discretized on a lattice obeys the Eigenstate Thermalization Hypothesis (ETH). To do so we study…Lukas Ebner, Berndt Müller, Andreas Schäfer et al.·Aug 28, 2023SaveLearn
Hybrid Monte Carlo Simulation with Fourier Acceleration of the N=2 Principal Chiral Model in two DimensionsMotivated by the similarity to QCD, specifically the property of asymptotic freedom, we simulate the dynamics of the SU(2) × SU(2) model in two dimensions using the Hybrid Monte Carlo…Roger Horsley, Brian Pendleton, Julian Wack·Aug 28, 2023SaveLearn
Gauge-independent transition separating confinement and Higgs phases in lattice SU(2) gauge theory with a scalar field in the fundamental representationAccording to the preceding studies, the lattice SU(2) gauge-scalar model with a single scalar field in the fundamental representation of the gauge group has a single confinement-Higgs phase where…Ryu Ikeda, Seikou Kato, Kei-Ichi Kondo et al.·Aug 25, 2023SaveLearn
Pion Transition Form Factor from Twisted-Mass Lattice QCD and the Hadronic Light-by-Light π0-pole Contribution to the Muon g-2The neutral pion generates the leading pole contribution to the hadronic light-by-light tensor, which is given in terms of the nonperturbative transition form factor…C. Alexandrou, S. Bacchio, G. Bergner et al.·Aug 23, 2023SaveLearn
Non-zero temperature study of spin 1/2 charmed baryons using lattice gauge theoryWe study the behaviour of spin 1/2 charmed baryons as the temperature increases. We make use of anisotropic lattice QCD simulations with Nf = 2 + 1 dynamical flavours. After determining the…Gert Aarts, Chris Allton, M. Naeem Anwar et al.·Aug 23, 2023SaveLearn
Glueball Spectrum with four light dynamical fermionsWe perform a calculation of the glueball spectrum for Nf=4 degenerate dynamical fermions with masses corresponding to light pions. We do so by making use of ensembles produced within the framework…Andreas Athenodorou, Jacob Finkenrath, Adam Lantos et al.·Aug 19, 2023SaveLearn
Toward quantum computations of the O(3) model using qumodesWe express the discrete 1+1-dimensional O(3) non-linear sigma model (NLσM) in a form well-suited for the continuous variable approach to quantum computing. Within the Schwinger boson…Raghav G. Jha, Felix Ringer, George Siopsis et al.·Aug 14, 2023SaveLearn
Streamlined data analysis in PythonPython is a particularly appealing language to carry out data analysis, owing in part to its user-friendly character as well as its access to well maintained and powerful libraries like NumPy and…Luis Altenkort, David Anthony Clarke, Jishnu Goswami et al.·Aug 12, 2023SaveLearn