Improved interpolating fields for hadrons at non-vanishing momentum

TL;DR

This paper introduces a generalized anisotropic smearing technique that reduces noise in lattice QCD calculations of hadrons at non-zero momentum while preserving ground state overlap.

Contribution

It presents a novel anisotropic smearing method tailored for boosted hadrons, improving signal quality in non-zero momentum lattice QCD studies.

Findings

Reduced noise-to-signal ratio for boosted hadrons

Maintained good ground state overlap

Enhanced accuracy in hadron momentum studies

Abstract

We demonstrate that a reduction in the noise-to-signal ratio may be obtained for hadrons at non-zero momenta whilst maintaining a good overlap with the ground state through a generalisation of Gaussian/Wuppertal smearing. The use of an anisotropic smearing wavefunction is motivated by the physical picture of a boosted hadron.