Meson correlators in a finite volume near the chiral limit
Hidenori Fukaya (1), Shoji Hashimoto (2, 3), Kenji Ogawa (3) ((1), Yukawa Institute for Theoretical Physics, (2) High Energy Accelerator, Research Organization, (3) The Graduate University for Advanced Studies)
TL;DR
This paper presents a calculation of meson correlators in a finite volume near the chiral limit using overlap fermions, comparing results with quenched chiral perturbation theory, and demonstrating the effectiveness of eigenmode approximations.
Contribution
It provides new insights into meson correlators near the chiral limit in finite volume using overlap fermions and compares results with theoretical predictions.
Findings
Scalar and pseudo-scalar correlators are well approximated with eigenmodes.
Results agree with quenched chiral perturbation theory.
Effective eigenmode approximation for small quark masses.
Abstract
We report on the results of our calculation of meson correlators in a finite volume. The calculation is carried out in the quenched approximation near the chiral limit (down to Mq = 2.6 MeV) using the overlap fermion. For these small quark masses, the scalar and pseudo-scalar correlators are well approximated with a few hundred eigenmodes. The results for both connected and disconnected correlators are compared with the theoretical predictions of quenched chiral perturbation theory.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · High-Energy Particle Collisions Research · Particle physics theoretical and experimental studies