The PZ method for estimating determinant ratios, with applications
C. Thron, K. F. Liu, S. J. Dong
Abstract
We introduce a new method for estimating determinants or determinant ratios of large matrices, which combines the techniques of Padè approximation with rational functions and Z2 noise estimation of traces of large matrices. The method requires simultaneously solving several matrix equations, which can be conveniently accomplished using the MR method. We include some preliinary results, and indicate potential applications to non-Hermitian matrices, and Hybrid Monte Carlo without pseudofermions.
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