Tackling the Fermionic Sign Problem in the Auxiliary-Field Monte Carlo Method

Details Tackling the Fermionic Sign Problem in the Auxiliary-Field Monte Carlo Method Tackling the Fermionic Sign Problem in the Auxiliary-Field Monte Carlo Method

2007-08-22

arxiv.org/abs/0708.2945v1

Physics

Nuclear Physics

Nuclear Theory

10 pages, 3 figures

Scientific paper

We explore a novel and straightforward solution to the sign problem that has plagued the Auxiliary-field Monte Carlo (AFMC) method applied to many-body systems for more than a decade. We present a solution to the sign problem that has plagued the Auxiliary-field Monte Carlo (AFMC) method for more than a decade and report a breakthrough where excellent agreement between AFMC and exact CI calculations for fully realistic nuclear applications is achieved. This result offers the capability, unmatched by other methods, to achieve exact solutions for large-scale quantum many-body systems.

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