Extracting resonance parameters from lattice data

Abstract

Monte Carlo simulations of the 4d O(4) model in the broken phase are performed to determine the parameters of a resonance. The standard method for extracting them on the lattice is through Lüscher's formula; recently a new method, based on the probability distribution concept, has been proposed. We study the application of these methods and compare them with Monte Carlo data.

14 pages, 16 figures, The XXVIII International Symposium on Lattice Field Theory, Lattice2010