Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems

Details Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems

1999-01-06

arxiv.org/abs/cond-mat/9901029v1

Physics

Condensed Matter

28 pages, REVTEX, 5 ps figures

Scientific paper

10.1103/PhysRevB.59.12788

We report several important observations that underscore the distinctions between the constrained-path Monte Carlo method and the continuum and lattice versions of the fixed-node method. The main distinctions stem from the differences in the state space in which the random walk occurs and in the manner in which the random walkers are constrained. One consequence is that in the constrained-path method the so-called mixed estimator for the energy is not an upper bound to the exact energy, as previously claimed. Several ways of producing an energy upper bound are given, and relevant methodological aspects are illustrated with simple examples.

Affiliated with

Also associated with

No associations

Rating

Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems 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 Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Issues and Observations on Applications of the Constrained-Path Monte Carlo Method to Many-Fermion Systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-201365