Resolving Exceptional Configurations

W. Bardeen, A. Duncan,E. Eichten,G. Hockney,H. Thacker

Nuclear Physics B - Proceedings Supplements（1998）

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摘要

In lattice QCD with Wilson fermions, exceptional configurations arise in the quenched approximation at small quark mass. The origin of these large previously uncontrolled lattice artifacts is identified. A simple well-defined procedure (MQA) is presented which removes the artifacts while preserving the correct continuum limit.

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