Recent progress of the sign problem in the Onishi formula

Noritaka Shimizu,Takahiro Mizusaki,Makito Oi

EPJ Web of Conferences（2018）

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摘要

The Hartree-Fock-Bogoliubov (HFB) method is one of the major methods to study a nuclear wave function. We discuss the sign problem in the Onishi formula, which emerges in calculating the overlap between two HFB wave functions. The origin of this problem is elucidated by expanding the overlap as a polynomial function. This article is based on Ref.[1].

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