LapH interpolating fields with open boundary conditions

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 $N_f=2+1$ Wilson-Clover fermions on a $32^3\times 64$ 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.

Comments: 8 pages, 5 figures, Proceedings contribution to the 39th International Symposium on Lattice Field Theory, 8th-13th August 2022, Bonn, Germany