First moments of the nucleon transverse quark spin densities using lattice QCDWe present a calculation of the Mellin moments of the transverse quark spin densities in the nucleon using lattice QCD. The densities are extracted from the unpolarized and transversity generalized…C. Alexandrou, S. Bacchio, M. Constantinou et al.·Feb 20, 2022SaveLearn
Taylor expansions and Pad\'e approximants for cumulants of conserved charge fluctuations at non-vanishing chemical potentialsUsing high statistics datasets generated in (2+1)-flavor QCD calculations at finite temperature we present results for low order cumulants of net baryon-number fluctuations at non-zero values of the…D. Bollweg, J. Goswami, O. Kaczmarek et al.·Feb 18, 2022SaveLearn
Simulating rare kaon decays K+π++- using domain wall lattice QCD with physical light quark massesWe report the first calculation using physical light-quark masses of the electromagnetic form factor V(z) describing the long-distance contributions to the K+π++- decay…P. A. Boyle, F. Erben, J. M. Flynn et al.·Feb 17, 2022SaveLearn
Supersymmetric Lattice Theories: Contribution to Snowmass 2022In this white paper we summarise the construction and applications of lattice theories possessing exact supersymmetry focusing, in particular, on N=4 Yang-Mills theory. Lattice formulations of this…Simon Catterall, Joel Giedt·Feb 16, 2022SaveLearn
Exponential reduction of the sign problem at finite density in the 2+1D XY model via contour deformationsWe study the 2+1 dimensional XY model at nonzero chemical potential μ on deformed integration manifolds, with the aim of alleviating its sign problem. We investigate several proposals for the…Matteo Giordano, Kornel Kapas, Sandor D Katz et al.·Feb 15, 2022SaveLearn
Topology induced first-order phase transitions in lattice quantum gravityCausal Dynamical Triangulations (CDT) is a lattice formulation of quantum gravity, suitable for Monte-Carlo simulations which have been used to study the phase diagram of the model. It has four…J. Ambjorn, J. Gizbert-Studnicki, A. Görlich et al.·Feb 15, 2022SaveLearn
Performance optimizations for porting the openQ package to GPUsOpenQ code has been used by the RC collaboration for the generation of fully dynamical QCD+QED gauge configurations with C boundary conditions. In this talk, optimization of…Roman Gruber, Anton Kozhevnikov, Marina Krstić Marinković et al.·Feb 15, 2022SaveLearn
Lattice QCD Calculations of Parton PhysicsIn this document, we summarize the status and challenges of calculating parton physics in lattice QCD for the US Particle Physics Community Planning Exercise (a.k.a. "Snowmass"). While PDF-moments…Martha Constantinou, Luigi Del Debbio, Xiangdong Ji et al.·Feb 15, 2022SaveLearn
QED and strong isospin corrections in the hadronic vacuum polarization contribution to the anomalous magnetic moment of the muonRecently, the Budapest-Marseille-Wuppertal collaboration achieved sub-percent precision in the evaluation of the lowest-order hadronic vacuum polarization contribution to the muon gμ-2…L. Parato, Sz. Borsanyi, Z. Fodor et al.·Feb 11, 2022SaveLearn
θ dependence of Tc in 4d SU(3) Yang-Mills theory with histogram method and the Lee-Yang zeros in the large N limitThe phase diagram on the θ-T plane in four dimensional SU(3) Yang-Mills theory is explored. We revisit the θ dependence of the deconfinement transition temperature, Tc(θ), on…Noriaki Otake, Norikazu Yamada·Feb 11, 2022SaveLearn
Resummed lattice QCD equation of state at finite baryon density: strangeness neutrality and beyondWe calculate a resummed equation of state with lattice QCD simulations at imaginary chemical potentials. This work presents a generalization of the scheme introduced in 2102.06660 to the case of…Szabolcs Borsanyi, Zoltan Fodor, Jana N. Guenther et al.·Feb 11, 2022SaveLearn
Lattice studies of the Sp(4) gauge theory with two fundamental and three antisymmetric Dirac fermionsWe consider the Sp(4) gauge theory coupled to Nf=2 fundamental and nf=3 antisymmetric flavours of Dirac fermions in four dimensions. This theory serves as the microscopic origin for composite…Ed Bennett, Deog Ki Hong, Ho Hsiao et al.·Feb 11, 2022SaveLearn
Applications of Machine Learning to Lattice Quantum Field TheoryThere is great potential to apply machine learning in the area of numerical lattice quantum field theory, but full exploitation of that potential will require new strategies. In this white paper for…Denis Boyda, Salvatore Calì, Sam Foreman et al.·Feb 10, 2022SaveLearn
Precision study of the continuum SU(3) Yang-Mills theory: how to use parallel tempering to improve on supercritical slowing down for first order phase transitionsWe perform large scale simulations to characterize the transition in quenched QCD. It is shown by a rigorous finite size scaling that the transition is of first order. After this qualitative feature…S. Borsanyi, Z. Fodor, D. A. Godzieba et al.·Feb 10, 2022SaveLearn
Exploring interpolating momentum schemesWe compute the renormalisation factors of the quark mass and wave function using IMOM (Interpolating MOMenta) schemes. The framework is the Rome-Southampton non-renormalisation method, but the…N. Garron, C. Cahill, M. Gorbahn et al.·Feb 9, 2022SaveLearn
Renormalization of the 3D SU(N) scalar energy-momentum tensor using the Wilson flowIn the holographic approach to cosmology, cosmological observables are described in terms of correlators of a three-dimensional boundary quantum field theory. As a concrete model, we study the 3D…Joseph K. L. Lee, Luigi Del Debbio, Elizabeth Dobson et al.·Feb 8, 2022SaveLearn
Virtual Photon Emission in Leptonic Decays of Charged Pseudoscalar MesonsWe study the radiative leptonic decays P\,\,+\,-, where P is a pseudoscalar meson and and are charged leptons. In such decays the…G. Gagliardi, V. Lubicz, G. Martinelli et al.·Feb 8, 2022SaveLearn
Generalised Parton Distributions from Lattice Feynman-Hellmann TechniquesWe report on the use of Feynman-Hellmann techniques to calculate the off-forward Compton amplitude (OFCA) in lattice QCD. At leading-twist, the Euclidean OFCA is parameterised by the Mellin moments…Alec Hannaford-Gunn, Kadir Utku Can, Roger Horsley et al.·Feb 8, 2022SaveLearn
Heavy quarks at finite temperatureNew incarnations of heavy-ion collision experiments are turning our attention to hard processes and a more fine-grained resolution of the QGP. In this endeavor quarkonia or open heavy flavors turn…Johannes Heinrich Weber·Feb 7, 2022SaveLearn
More methods for calculating the topological charge (density) of SU(N) lattice gauge fields in 3+1 dimensionsWe revisit old ideas that smearing or blocking an SU(N) lattice gauge field, or averaging over an ensemble of fields created in the neighbourhood of that field, can reduce the high frequency…Michael Teper·Feb 5, 2022SaveLearn
A lattice study of ππ scattering at large NcWe present the first lattice study of pion-pion scattering with varying number of colors, Nc. We use lattice simulations with four degenerate quark flavors, Nf=4, and…Jorge Baeza-Ballesteros, Pilar Hernández, Fernando Romero-López·Feb 4, 2022SaveLearn
Two-current transition amplitudes with two-body final statesWe derive the on-shell form of amplitudes containing two external currents with a single hadron in the initial state and two hadrons in the final state, denoted as 1+J 2+J.…Keegan H. Sherman, Felipe G. Ortega-Gama, Raúl A. Briceño et al.·Feb 4, 2022SaveLearn
The neutron-proton mass differenceWe present a lattice calculation of the mass difference between neutron and proton, for which we find Mn - Mp = 1.73(69) \, MeV. This is obtained at 1st order in the QED coupling…Simone Romiti·Feb 3, 2022SaveLearn
Lattice QCD calculation of the two-photon exchange contribution to the muonic-hydrogen Lamb shiftWe develop a method for lattice QCD calculation of the two-photon exchange contribution to the muonic-hydrogen Lamb shift. To demonstrate its feasibility, we present the first lattice calculation…Yang Fu, Xu Feng, Lu-Chang Jin et al.·Feb 3, 2022SaveLearn
Nucleon Form Factors from the Feynman-Hellmann Method in Lattice QCDLattice QCD calculations of the nucleon electromagnetic form factors are of interest at both the high and low momentum transfer regions. For high momentum transfers especially there are open…M. Batelaan, R. Horsley, Y. Nakamura et al.·Feb 3, 2022SaveLearn