Holstein polaron in two and three dimensions by quantum Monte Carlo

Details Holstein polaron in two and three dimensions by quantum Monte Carlo Holstein polaron in two and three dimensions by quantum Monte Carlo

2004-01-30

arxiv.org/abs/cond-mat/0401634v1

physica status solidi (b) 242, 1406 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 11 figures

Scientific paper

10.1002/pssb.200440019

A recently developed quantum Monte Carlo approach to the Holstein model with one electron [PRB 69, 024301 (2004)] is extended to two and three dimensional lattices. A moderate sign problem occurs, which is found to diminish with increasing system size in all dimensions, and not to affect simulations significantly. We present an extensive study of the influence of temperature, system size, dimensionality and model parameters on the small-polaron cross over. Results are extrapolated to remove the error due to the Trotter discretization, which significantly improves the accuracy. Comparison with existing work and other quantum Monte Carlo methods is made. The method can be extended to the many-electron case.

Affiliated with

Also associated with

No associations

Rating

Holstein polaron in two and three dimensions by quantum Monte Carlo does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Holstein polaron in two and three dimensions by quantum Monte Carlo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Holstein polaron in two and three dimensions by quantum Monte Carlo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-628503