Simulations of Discrete Quantum Systems in Continuous Euclidean Time

Details Simulations of Discrete Quantum Systems in Continuous Euclidean Time Simulations of Discrete Quantum Systems in Continuous Euclidean Time

1996-02-29

arxiv.org/abs/cond-mat/9602164v1

Phys.Rev.Lett. 77 (1996) 5130-5133; Nucl.Phys.Proc.Suppl. 53 (1997) 838-840

Physics

Condensed Matter

The UUcoded file cluster.tar.gz contains RevTeX source and two Postscript figures. Further information available at http://c

Scientific paper

10.1016/S0920-5632(96)00796-7

Path integrals are usually formulated in discrete Euclidean time using the Trotter formula. We propose a new method to study discrete quantum systems, in which we work directly in the Euclidean time continuum. The method is of general interest and can be applied to studies of quantum spin systems, lattice fermions, and in principle also lattice gauge theories. Here it is applied to the Heisenberg quantum antiferromagnet using a continuous-time version of a loop cluster algorithm. The computational advantage of this algorithm is exploited to confirm the predictions of chiral perturbation theory in the extreme low temperature regime, down to $T = 0.01 J$. A fit of the low-energy parameters of chiral perturbation theory gives excellent agreement with previous results and with experiments.

Affiliated with

Also associated with

No associations

Rating

Simulations of Discrete Quantum Systems in Continuous Euclidean Time 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 Simulations of Discrete Quantum Systems in Continuous Euclidean Time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulations of Discrete Quantum Systems in Continuous Euclidean Time will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-461159