Pion-pion scattering phase shifts with the stochastic LapH method
Brendan Fahy, John Bulava, Ben H\"orz, Keisuke J. Juge and, Colin Morningstar, Chik Him Wong
TL;DR
This paper presents a novel computational approach using the stochastic LapH method to calculate pion-pion scattering phase shifts on large lattice volumes with light pion masses, advancing lattice QCD techniques.
Contribution
The paper introduces the stochastic LapH method for efficient calculation of scattering phase shifts on large lattices with light pions, enabling more realistic simulations.
Findings
Successful calculation of pion-pion scattering phase shifts at pion masses down to 240 MeV.
Maintained $m_c L > 4$ ensuring finite volume effects are controlled.
Demonstrated the method's effectiveness on anisotropic clover Wilson lattices.
Abstract
Progress in calculating scattering phase shifts on anisotropic clover Wilson lattices is described. The stochastic LapH method facilitates computations in large volumes and for light pion masses. Results for pion masses down to 240 MeV, keeping , are presented.
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