Lattice QCD at finite temperature: some aspects related to chiral symmetryOut of the many exciting results obtained with the lattice approach to QCD under extreme conditions, I discuss a few selected items related to chiral symmetry: the chiral condensate as an approximate…Gert Aarts·Oct 13, 2022SaveLearn
Estimating excited states contamination of B π form factors using heavy meson chiral perturbation theoryUsing Heavy Meson Chiral Perturbation Theory (HMChPT), the B* π excited states contamination of the B π vector form factors is computed to NLO in the chiral expansion and in the static…Oliver Bär, Alexander Broll, Rainer Sommer·Oct 13, 2022SaveLearn
cSW at One-Loop Order for Brillouin FermionsWilson-like Dirac operators can be written in the form D=γμ∇μ- ar2 . For Wilson fermions the standard two-point derivative ∇μ(std) and 9-point…Maximilian Ammer, Stephan Durr·Oct 13, 2022SaveLearn
Bπ-state contamination in B-meson observablesMulti-particle states with additional pions are expected to result in a non-negligible excited-state contamination in lattice simulations. We show that heavy meson chiral perturbation theory can be…Oliver Bar, Alexander Broll, Rainer Sommer·Oct 13, 2022SaveLearn
Vacuum Decay and Euclidean Lattice Monte CarloThe decay rate of a metastable vacuum is usually calculated using a semiclassical approximation to the Euclidean path integral. The extension to a complete Euclidean lattice Monte Carlo computation,…Jiayu Shen, Patrick Draper, Aida X. El-Khadra·Oct 12, 2022SaveLearn
Nucleon transverse quark spin densitiesWe present a calculation of the Mellin moments of the nucleon transverse quark spin densities extracted from the unpolarized and transversity generalized form factors. We use three NF=2+1+1…Constantia Alexandrou, Simone Bacchio, Martha Constantinou et al.·Oct 11, 2022SaveLearn
QED on the lattice and numerical perturbative computation of g-2We compute the electron g factor to the O(α5) order on the lattice in quenched QED. We first study finite volume corrections in various IR regularization methods to discuss which…Ryuichiro Kitano, Hiromasa Takaura·Oct 11, 2022SaveLearn
The Sphaleron Rate from 4D Euclidean LatticesWe develop a new method to determine thermal activation rates, such as for bubble nucleation, topology change, etc., using 4-dimensional Euclidean methods. This allows nonperturbative study…Marc Barroso Mancha, Guy D. Moore·Oct 11, 2022SaveLearn
Improving efficiency of the path optimization method for a gauge theoryWe investigate efficiency of a gauge-covariant neural network and an approximation of the Jacobian in optimizing the complexified integration path toward evading the sign problem in lattice field…Yusuke Namekawa, Kouji Kashiwa, Hidefumi Matsuda et al.·Oct 11, 2022SaveLearn
Lattice QCD studies on decuplet baryons as meson-baryon bound states in the HAL QCD methodWe study decuplet baryons from meson-baryon interactions in lattice QCD, in particular, and baryons from P-wave I=3/2 Nπ and I=0 K interactions, respectively.…Kotaro Murakami, Yutaro Akahoshi, Sinya Aoki et al.·Oct 11, 2022SaveLearn
Quantum chaos in supersymmetric Yang-Mills-like model: equation of state, entanglement, and spectral form-factorsWe analyze in detail a sharp transition between the low-energy, low-dimensional eigenstates and the high-energy chaotic bulk of the spectrum for a simple supersymmetric quantum-mechanical model with…Pavel Buividovich·Oct 11, 2022SaveLearn
Spectroscopy in the 2+1d Thirring Model with N=1 Domain Wall FermionsWe employ the domain wall fermion (DWF) formulation of the Thirring model on a lattice in 2+1+1 dimensions and perform N=1 flavor Monte Carlo simulations. At a critical interaction strength the…Simon Hands, Johann Ostmeyer·Oct 10, 2022SaveLearn
DMRG study of the higher-charge Schwinger model and its 't Hooft anomalyThe charge-q Schwinger model is the (1+1)-dimensional quantum electrodynamics (QED) with a charge-q Dirac fermion. It has the Zq 1-form symmetry and also enjoys the Zq…Masazumi Honda, Etsuko Itou, Yuya Tanizaki·Oct 9, 2022SaveLearn
Improved coarse-graining methods on two dimensional tensor networks including fermionsWe show how to apply renormalization group algorithms incorporating entanglement filtering methods and a loop optimization to a tensor network which includes Grassmann variables which represent…Muhammad Asaduzzaman, Simon Catterall, Yannick Meurice et al.·Oct 7, 2022SaveLearn
Fine-Tuning of the Yukawa and Quartic Couplings in Supersymmetric QCDIn this work, we investigate the fine tuning of parameters in N = 1 Supersymmetric QCD, discretized on a Euclidean lattice. Specifically, we study the renormalization of the Yukawa…M. Costa, H. Herodotou, H. Panagopoulos·Oct 7, 2022SaveLearn
Confinement in QCD: noveltiesWe report on recent progress in understanding confinement of colour in QCD as dual superconductivity of the vacuum. A gauge invariant version of the creation operator of monopoles is constructed…Adriano Di Giacomo·Oct 7, 2022SaveLearn
Stochastic normalizing flows for lattice field theoryStochastic normalizing flows are a class of deep generative models that combine normalizing flows with Monte Carlo updates and can be used in lattice field theory to sample from Boltzmann…Michele Caselle, Elia Cellini, Alessandro Nada et al.·Oct 6, 2022SaveLearn
Improved local truncation schemes for the higher-order tensor renormalization group methodThe higher-order tensor renormalization group is a tensor-network method providing estimates for the partition function and thermodynamical observables of classical and quantum systems in thermal…Jacques Bloch, Robert Lohmayer, Maximilian Meister et al.·Oct 5, 2022SaveLearn
Rediscovery of Numerical L\"uscher's Formula from the Neural NetworkWe present that by predicting the spectrum in discrete space from the phase shift in continuous space, the neural network can remarkably reproduce the numerical L\"uscher's formula to a high…Yu Lu, Yi-Jia Wang, Ying Chen et al.·Oct 5, 2022SaveLearn
Deconfinement transition and localization of Dirac modes in finite-temperature Z3 gauge theory on the latticeWe study the localization properties of the eigenmodes of the staggered Dirac operator across the deconfinement transition in finite-temperature Z3 pure gauge theory on the lattice in 2+1…György Baranka, Matteo Giordano·Oct 3, 2022SaveLearn
Schwinger model on an interval: analytic results and DMRGQuantum electrodynamics in 1+1 dimensions (Schwinger model) on an interval admits lattice discretization with a finite-dimensional Hilbert space, and is often used as a testbed for quantum and…Takuya Okuda·Oct 1, 2022SaveLearn
Inhomogeneity of rotating gluon plasma and Tolman-Ehrenfest law in imaginary time: lattice results for fast imaginary rotationWe present the results of first-principle numerical simulations of Euclidean SU(3) Yang-Mills plasma rotating with a high imaginary angular frequency. The rigid Euclidean rotation is introduced via…M. N. Chernodub, V. A. Goy, A. V. Molochkov·Sep 30, 2022SaveLearn
Towards the computation of inclusive decay rates using lattice QCDWe present a non-perturbative computation of inclusive rates of semileptonic decays of heavy mesons from lattice QCD simulations. The calculation is based on the extraction of smeared spectral…Paolo Gambino, Shoji Hashimoto, Sandro Mächler et al.·Sep 30, 2022SaveLearn
Prospects for a lattice calculation of the rare decay + p+-We present a strategy for calculating the rare decay of a + (uus) baryon to a proton (uud) and di-lepton pair using lattice QCD. To determine this observable one needs to numerically…Felix Erben, Vera Gülpers, Maxwell T. Hansen et al.·Sep 30, 2022SaveLearn
Overlap quark propagator near the physical pion massThe Landau-gauge quark propagator is calculated using overlap fermions on 2+1-flavour dynamical fermion gauge fields from the PACS-CS collaboration with pion mass mπ 156 MeV and…Adam Virgili, Waseem Kamleh, Derek Leinweber·Sep 29, 2022SaveLearn