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19922026
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hep-lat2026

Variance reduction in lattice QCD observables via normalizing flows

Ryan Abbott, Denis Boyda, Yang Fu +5

Normalizing flows can be used to construct unbiased, reduced-variance estimators for lattice field theory observables that are defined by a derivative with respect to action parame…

hep-lat2025★ 2 cited

Scaling flow-based approaches for topology sampling in gauge theory

Claudio Bonanno, Andrea Bulgarelli, Elia Cellini +4

We develop a methodology based on out-of-equilibrium simulations to mitigate topological freezing when approaching the continuum limit of lattice gauge theories. We reduce the auto…

hep-lat2025★ 1 cited

Application of Laplace filters to the analysis of lattice time correlators

Antonin Portelli, Justus Tobias Tsang

The analysis of lattice simulation correlation function data is notoriously hindered by the ill-conditioning of the Euclidean time covariance matrix. Additionally, the isolation of…

hep-lat2025★ 4 cited

Long distance contributions to neutral -meson mixing from lattice QCD

Matteo Di Carlo, Felix Erben, Maxwell T. Hansen

The study of neutral -meson mixing provides a unique probe of long-distance effects in the charm sector, where Standard Model contributions are dominated by nonperturbative effe…

hep-lat2025

Fourier Accelerated HMC in the SU(N) X SU(N) Principal Chiral Model

Roger Horsley, Pablo Morande, Brian Pendleton

We report the results of Fourier-accelerated HMC simulations of 2D SU(N) X SU(N) principal chiral models for N = 2, 3, 4, 6, 9. These models share several key properties with 4D QC…

hep-lat2025★ 1 cited

improvement of the flavour singlet scalar density in a setup with Wilson fermions

Pia Leonie Jones Petrak, Jochen Heitger, Fabian Joswig

We report on our Ward identity determination of the improvement coefficient for the flavour singlet scalar density, namely , from three-flavour lattic…

hep-lat2025★ 2 cited

Gross-Llewellyn Smith sum rule from lattice QCD

K. Utku Can, Joshua A. Crawford, Roger Horsley +6

We compute the Gross-Llewellyn Smith sum rule, i.e. the lowest odd moment of the parity-violating structure function, , of the nucleon from a lattice QCD calculation of the Co…

hep-lat2025★ 2 cited

Lattice QCD calculation of the Compton amplitude subtraction function

K. U. Can, A. Hannaford-Gunn, R. Horsley +6

The Compton amplitude subtraction function is an essential component in work concerning both the proton radius puzzle and the proton-neutron mass difference. However, owing to the…

hep-lat2024

Hadronic decay of vector charmonium from the lattice

Benoît Blossier, Jochen Heitger, Jan Neuendorf +1

Estimating decay parameters in lattice simulations is a computationally demanding problem, requiring several volumes and momenta. We explore an alternative approach, where the tran…

hep-lat2024★ 79 cited

FLAG Review 2024

Y. Aoki, T. Blum, S. Collins +28

We review lattice results related to pion, kaon, -meson, -meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communi…

hep-lat2024★ 11 cited

Transverse force distributions in the proton from lattice QCD

J. A. Crawford, K. U. Can, R. Horsley +5

Single-spin asymmetries observed in polarised deep-inelastic scattering are important probes of hadron structure. The Sivers asymmetry has been the focus of much attention in QCD p…

hep-lat2024★ 13 cited

Hybrid calculation of hadronic vacuum polarization in muon g-2 to 0.48\%

A. Boccaletti, Sz. Borsanyi, A. Cotellucci +19

We present a new lattice QCD calculation of the leading order hadronic vacuum polarization (LO-HVP) contribution to the muon anomalous magnetic moment . We reduce uncertaintie…

hep-lat2024★ 10 cited

Light and strange vector resonances from lattice QCD at physical quark masses

Peter Boyle, Felix Erben, Vera Gülpers +5

We present the first ab initio calculation at physical quark masses of scattering amplitudes describing the lightest pseudoscalar mesons interacting via the strong force in the vec…

hep-lat2024★ 7 cited

Physical-mass calculation of and resonance parameters via and scattering amplitudes from lattice QCD

Peter Boyle, Felix Erben, Vera Gülpers +5

We present our study of the and resonances from lattice quantum chromodynamics (QCD) employing domain-wall fermions at physical quark masses. We determine the f…

hep-lat2023★ 1 cited

Hybrid Monte Carlo Simulation with Fourier Acceleration of the Principal Chiral Model in two Dimensions

Roger Horsley, Brian Pendleton, Julian Wack

Motivated 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 M…

hep-lat2023★ 3 cited

Exploiting stochastic locality in lattice QCD: hadronic observables and their uncertainties

Mattia Bruno, Marco Cè, Anthony Francis +4

Because of the mass gap, lattice QCD simulations exhibit stochastic locality: distant regions of the lattice fluctuate independently. There is a long history of exploiting this to…

hep-lat2023★ 6 cited

Elastic Nucleon-Pion scattering amplitudes in the channel at physical pion mass from Lattice QCD

Constantia Alexandrou, Simone Bacchio, Giannis Koutsou +4

We present an investigation of pion-nucleon elastic scattering in the channel using lattice QCD with degenerate up and down, strange and c…

hep-lat2023★ 7 cited

Feynman--Hellmann approach to transition matrix elements and quasi-degenerate energy states

M. Batelaan, K. U. Can, R. Horsley +6

The Feynman--Hellmann approach to computing matrix elements in lattice QCD by first adding a perturbing operator to the action is described using the transition matrix and the Dyso…

hep-lat2023★ 13 cited

Constraining beyond the Standard Model nucleon isovector charges

R. E. Smail, M. Batelaan, R. Horsley +8

At the TeV scale, low-energy precision observations of neutron characteristics provide unique probes of novel physics. Precision studies of neutron decay observables are susceptibl…

hep-lat2023★ 21 cited

Exclusive semileptonic decays on the lattice

Jonathan M. Flynn, Ryan C. Hill, Andreas Jüttner +3

Semileptonic decays provide an alternative -decay channel to determine the CKM matrix element , and to obtain a -ratio to investigate lepton-flav…

hep-lat2023★ 28 cited

Three relativistic neutrons in a finite volume

Zachary T. Draper, Maxwell T. Hansen, Fernando Romero-López +1

We generalize the relativistic field-theoretic (RFT) three-particle finite-volume formalism to systems of three identical, massive, spin- fermions, such as three neutrons. Thi…

hep-lat2023★ 10 cited

Spectrum of QCD with one flavor: A window for supersymmetric dynamics

Michele Della Morte, Benjamin Jäger, Francesco Sannino +2

We compute the spectrum of the low-lying mesonic states with vector, scalar and pseudoscalar quantum numbers in QCD with one flavour. With three colours the fundamental and the two…

hep-lat2023★ 1 cited

The = 1/2 and 3/2 scattering length with domain wall fermions at physical pion mass with all-to-all propagators

Nils Asmussen, Felix Erben, Jonathan Flynn +3

We present our calculations for the = 1/2 and 3/2 s-wave scattering length with physical quark masses, extracted from the interaction energy of Euclidean two-point functi…

hep-lat2023★ 5 cited

Hadronic observables from master-field simulations

Marco Cè, Mattia Bruno, John Bulava +5

Substantial progress has been made recently in the generation of master-field ensembles. This has to be paired with efficient techniques to compute observables on gauge field confi…