Loop-flip algorithm for the anisotropic quantum Heisenberg antiferromagnet

摘要

A new scheme of the loop-cluster algorithm is proposed to simulate an anisotropic Heisenberg antiferromagnet - the XYZ model- to overcome the critical slowing down. Results of the internal energy, uniform and staggered susceptibilities, as well as some primary features of the algorithm, are presented suggesting that this quantum system may also be studied as the classical spin systems using the cluster updating techniques. (author). 17 refs, 1 fig., 3 tabs. (Atomindex citation 26:069042)