Smeared propagators for lattice hadron spectroscopy
G. M. de Divitiis, R. Frezzotti, M. Guagnelli, M. Masetti, R. Petronzio
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.
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