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Physical Review C

Calculation of excited-state properties with an auxiliary-field Monte Carlo method

K. Kume, Kanako Sato, Yukiko Umemoto

Published Jun 1, 1997• 1 citation
Publisher

Abstract

We propose a method for calculating the excited-state properties of a quantum many-fermion system based on the auxiliary-field Monte-Carlo method. We have examined our method with the exactly solvable pairing-force model and the Lipkin model.
DOI
10.1103/physrevc.55.2866

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Quantum Monte Carlo simulations provide a powerful tool to compute static properties of quantum many-particle models and realistic systems. Here, the authors present a technique to reduce the computational cost of computing ground-state energies, properties, and correlation functions in the framework of the auxiliary-field quantum Monte Carlo method. This is based on a simple application of group theory, and can be readily transferred to other computational methodologies for many-particle systems.
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