LapH interpolating fields with open boundary conditions
Michele Della Morte, Olmo Francesconi, Justus Tobias Tsang
TL;DR
This paper optimizes the stochastic LapH method for charm-light mesonic spectroscopy on open boundary condition lattices, analyzing boundary effects and refining parameter choices for better excitation isolation.
Contribution
It introduces an optimized LapH procedure tailored for open boundary conditions and charm-light spectroscopy, addressing boundary effects in two-point mesonic correlation functions.
Findings
Effective LapH parameter settings identified
Boundary effects can be isolated with the new fitting procedure
Enhanced accuracy in charm-light meson spectroscopy results
Abstract
The stochastic Laplacian Heaviside (LapH) method has proven to be successful in hadronic calculations. In this work, with charm-light spectroscopy in mind, we set up and optimise the LapH procedure limiting ourselves to the evaluation of two-point mesonic correlation functions. The calculations are performed on CLS ensembles with Wilson-Clover fermions on a lattice with open boundary conditions. We analyse the interplay between the LapH parameters and the boundary effects, and implement a fitting procedure to isolate excitations coming from the border.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies