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A study of practical implementations of the overlap Dirac operator in four dimensions
Nuclear Physics B, no. 1-2 (1999): 457-471
EI
Abstract
We study three practical implementations of the overlap Dirac operator D̵0 = 12 [1+γϵ(Hw)] in four dimensions. Two implementations are based on different representations of ϵ(Hw) as a sum over poles. One of them is a polar decomposition and the other is an optimal fit to a ratio of polynomials. The third one is obtained by representing ϵ(...More
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