paper

Imaginary chemical potential quantum Monte Carlo for Hubbard molecules

arXiv:cond-mat/0412641 · doi:10.1103/PhysRevE.71.047701

Abstract

We generalize the imaginary chemical potential quantum Monte Carlo (QMC) method proposed by Dagotto et al. [Phys. Rev. B 41, R811 (1990)] to systems without particle-hole symmetry. The generalized method is tested by comparing the results of the QMC simulations and exact diagonalization on small Hubbard molecules, such as tetrahedron and truncated tetrahedron. Results of the application of the method to the C Hubbard molecule are discussed.

4 pages, 4 figures, RevTeX4

Imaginary chemical potential quantum Monte Carlo for Hubbard molecules · wovepaper