Learning Trivializing Gradient Flows for Lattice Gauge TheoriesWe propose a unifying approach that starts from the perturbative construction of trivializing maps by L\"uscher and then improves on it by learning. The resulting continuous normalizing flow model…Simone Bacchio, Pan Kessel, Stefan Schaefer et al.·Dec 16, 2022SaveLearn
Probing the energy-smeared R-ratio on the latticeWe present a first-principles lattice QCD investigation of the R-ratio between the e+e- cross-section into hadrons and that into muons. By using the method of Ref.[1], that allows to extract…Constantia Alexandrou, Simone Bacchio, Alessandro De Santis et al.·Dec 16, 2022SaveLearn
The International Lattice Data Grid -- towards FAIR DataThe International Lattice Data Grid (ILDG) is a community-wide initiative to realize the sharing of primary data from lattice QCD simulations according to the principles of FAIR data. We recall the…Frithjof Karsch, Hubert Simma, Tomoteru Yoshie·Dec 16, 2022SaveLearn
Fits of finite-volume smeared spectral densitiesMotivated by recent progress in the numerical inversion of the Laplace transform, we investigate applications of finite-volume smeared spectral densities. These include the tuning of operator…Luigi Del Debbio, Alessandro Lupo, Marco Panero et al.·Dec 15, 2022SaveLearn
Kernel controlled real-time Complex Langevin simulationThis study explores the utility of a kernel in complex Langevin simulations of quantum real-time dynamics on the Schwinger-Keldysh contour. We give several examples where we use a systematic scheme…Daniel Alvestad, Rasmus Larsen, Alexander Rothkopf·Dec 15, 2022SaveLearn
Tetraquarks and pentaquarks in lattice QCD with light and heavy quarksWe review how lattice QCD can contribute to the prediction and the comprehension of tetraquarks, pentaquarks and related exotic hadrons, with at least one heavy quark. We include all families of…Pedro Bicudo·Dec 15, 2022SaveLearn
Non-perturbative renormalization of quark and gluon operators using a gauge-invariant schemeWe present preliminary results for the renormalization functions (RFs) of a number of quark and gluon operators studied in lattice QCD using a gauge-invariant renormalization scheme (GIRS). GIRS is a…G. Spanoudes, C. Alexandrou, J. Finkenrath et al.·Dec 15, 2022SaveLearn
Charm mass effects in the static energy computed in 2+1+1 flavor lattice QCDWe report our analysis for the static energy in (2+1+1)-flavor QCD over a wide range of lattice spacings and several quark masses. We obtain results for the static energy out to distances of nearly 1…Johannes Heinrich Weber, Nora Brambilla, Rafael L. Delgado et al.·Dec 15, 2022SaveLearn
Simulating 2+1D Lattice Quantum Electrodynamics at Finite Density with Neural Flow WavefunctionsWe present a neural flow wavefunction, Gauge-Fermion FlowNet, and use it to simulate 2+1D lattice compact quantum electrodynamics with finite density dynamical fermions. The gauge field is…Zhuo Chen, Di Luo, Kaiwen Hu et al.·Dec 14, 2022SaveLearn
Hausdorff dimension of fermions on a random latticeGeometric properties of lattice quantum gravity in two dimensions are studied numerically via Monte Carlo on Euclidean Dynamical Triangulations. A new computational method is proposed to simulate…Mattia Varrone, William E V Barker·Dec 14, 2022SaveLearn
Gauge generation and dissemination in OpenLatIn this contribution we report the status and plans of the open lattice initiative to generate and share new gauge ensembles using the stabilised Wilson fermion framework. The production strategy is…Francesca Cuteri, Anthony Francis, Patrick Fritzsch et al.·Dec 14, 2022SaveLearn
Setting the Scale Using Baryon Masses with Isospin-Breaking CorrectionsWe present the status of an ongoing project aimed at the inclusion of isospin-breaking corrections arising from the non-degeneracy of the light quark masses and electromagnetic interactions in…Alexander M. Segner, Andrew D. Hanlon, Andreas Risch et al.·Dec 14, 2022SaveLearn
Disconnected contribution to the LO HVP term of muon g-2 from ETMCWe present a lattice determination of the disconnected contributions to the leading-order hadronic vacuum polarization (HVP) to the muon anomalous magnetic moment in the so-called short and…Constantia Alexandrou, Simone Bacchio, Petros Dimopoulos et al.·Dec 14, 2022SaveLearn
Symmetry Breaking in an Extended-O(2) ModelMotivated by attempts to quantum simulate lattice models with continuous Abelian symmetries using discrete approximations, we consider an extended-O(2) model that differs from the ordinary O(2) model…Leon Hostetler, Ryo Sakai, Jin Zhang et al.·Dec 13, 2022SaveLearn
Exploring the large-Nc limit with one quark flavourWe use one-flavour QCD (Nc=3) as a proxy to understand N=1 SYM. For our simulations, we use tree-level improved Wilson fermions and Symanzik improved gauge action. The hadron spectrum…Michele Della Morte, Benjamin Jäger, Sofie Martins et al.·Dec 13, 2022SaveLearn
The η → γ* γ* transition form factor and the hadronic light-by-light η-pole contribution to the muon g-2 from lattice QCDWe calculate the double-virtual η → γ* γ* transition form factor Fη γ* γ*(q12,q22) from first principles using a lattice QCD…Constantia Alexandrou, Simone Bacchio, Sebastian Burri et al.·Dec 13, 2022SaveLearn
Running HMC Simulation with Python via QUDALyncs-API is a Python API for Lattice QCD applications. It is designed as a Python toolkit that allows the user to use and run various lattice QCD libraries while programming in Python. The goal is…Shuhei Yamamoto, Simone Bacchio, Jacob Finenrath·Dec 13, 2022SaveLearn
Twisted mass ensemble generation on GPU machinesWe present how we ported the Hybrid Monte Carlo implementation in the tmLQCD software suite to GPUs through offloading its most expensive parts to the QUDA library. We discuss our motivations and…Bartosz Kostrzewa, Simone Bacchio, Jacob Finkenrath et al.·Dec 13, 2022SaveLearn
Continuum limit of parton distribution functions from the pseudo-distribution approach on the latticePrecise exploration of the partonic structure of the nucleon is one of the most important aims of high-energy physics. In recent years, it has become possible to address this topic with…Manjunath Bhat, Wojciech Chomicki, Krzysztof Cichy et al.·Dec 12, 2022SaveLearn
Topology and the Dirac Spectrum in Hot QCDIt is known that contrary to expectations, the order parameter of chiral symmetry breaking, the Dirac spectral density at zero virtuality does not vanish above the critical temperature of QCD.…Tamas G. Kovacs·Dec 12, 2022SaveLearn
Inhomogeneous phases in the 3+1-dimensional Nambu-Jona-Lasinio model and their dependence on the regularization schemeIn this work we study the 3+1-dimensional Nambu-Jona-Lasinio (NJL) model in the mean field-approximation. We carry out calculations using five different regularization schemes (two continuum and…Laurin Pannullo, Marc Wagner, Marc Winstel·Dec 12, 2022SaveLearn
Estimation of the photon production rate using imaginary momentum correlatorsThe thermal photon emission rate is determined by the spatially transverse, in-medium spectral function of the electromagnetic current. Accessing the spectral function using Euclidean data is,…Csaba Török, Marco Cè, Tim Harris et al.·Dec 11, 2022SaveLearn
Dynamical solution of the strong CP problem within QCD ?The strong CP problem is inseparably connected with the topology of gauge fields and the mechanism of color confinement, which requires nonperturbative tools to solve it. In this talk I present…Gerrit Schierholz·Dec 11, 2022SaveLearn
Open Science in Lattice Gauge Theory communityOpen science aims to make scientific research processes, tools and results accessible to all scientific communities, creating trust in science and enabling digital competences to be realized in…Andreas Athenodorou, Ed Bennett, Julian Lenz et al.·Dec 9, 2022SaveLearn
Charmonium-like states with JP=1+ and isospin 1Many mesons with properties incompatible with a cc structure have already been discovered, e.g. the Zc mesons with isospin 1. We investigate the spectrum of exotic charmonium-like mesons…Mitja Sadl, Sara Collins, M. Padmanath et al.·Dec 9, 2022SaveLearn