Extracting physics from an unphysical situation: light mesons in a small box

Abstract

Quantum Chromo Dynamics is considered in a setup where the light mesons are squeezed into unphysically small boxes. We show how such a situation can be used to determine the couplings of the low energy chiral Lagrangian from lattice simulations, applying chirally invariant formulations of lattice fermions.

11 pages, 4 figures, contribution to the NIC proceedings 2003