Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets"

Details Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets" Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets"

2008-01-29

arxiv.org/abs/0801.4498v1

Phys. Rev. B 77, 146401 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages

Scientific paper

10.1103/PhysRevB.77.146401

Quantum Monte Carlo methods are sophisticated numerical techniques for simulating interacting quantum systems. In some cases, however, they suffer from the notorious "sign problem" and become too inefficient to be useful. A recent publication [J. Wojtkiewicz, Phys. Rev. B 75, 174421 (2007)] claims to have solved the sign problem for a certain class of frustrated quantum spin systems through the use of a bipartite valence bond basis. We show in this Comment that the apparent positivity of the path integral is due to a misconception about the resolution of the identity operator in this basis, and that consequently the sign problem remains a severe obstacle for the simulation of frustrated quantum magnets.

Affiliated with

Also associated with

No associations

Rating

Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets" 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 Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets", we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comment on "Quantum Monte Carlo scheme for frustrated Heisenberg antiferromagnets" will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-185756