Directed loop updates for quantum lattice models.
This article outlines how the quantum Monte Carlo directed loop update recently introduced can be applied to a wide class of quantum lattice models. Several models are considered: spin-s XXZ models with longitudinal and transverse magnetic fields, boson models with two-body interactions, and one-dimensional spinful fermion models. Expressions are given for the parameter regimes where very efficient "no-bounce" quantum Monte Carlo algorithms can be found.
Syljuåsen
Olav F
OF
Nordita, Blegdamsvej 17, DK-2100, Copenhagen Ø, Denmark. sylju@nordita.dk