Smeared propagators for lattice hadron spectroscopy

Abstract

We propose to replace ordinary propagators in lattice operator correlations entering the determination of hadron masses with space-time smeared propagators. These are defined as the inverse of the quadratic operator in the fermion action times its hermitian conjugate. We obtain a cleaner determination of hadron masses, comparable to the effect of using smeared operators.

Comments: PS file replaced with uuencoded PS file, 9 pages with 5 figures included