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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/1354

Title: Quantum Monte Carlo computation: The sign problem as a Berry phase
Authors: Samson, J.H.
Issue Date: 1993
Publisher: © American Physical Society
Citation: SAMSON, J.H., 1993. Quantum Monte Carlo computation: The sign problem as a Berry phase. Physical Review B, 47(6), pp 3408–3411
Abstract: The partition function of interacting electrons is often represented as that of noninteracting electrons moving in a stochastic time-dependent field, integrated over the field. Quantum Monte Carlo computation of this functional integral suffers from the sign problem: rapid oscillation of the sign of the integrand at low temperature. The integrand is in general complex: the phase tends to a Berry phase for smooth paths at low temperatures, where spins follow fields adiabatically, and to zero in the high-temperature limit, recovering the static approximation.
Description: This article was published in the journal, Physical Review B [© American Physical Society]. It is also available at: http://link.aps.org/abstract/PRB/v47/p3408.
URI: https://dspace.lboro.ac.uk/2134/1354
ISSN: 1098-0121
Appears in Collections:Published Articles (Physics)

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