title: Nested cluster algorithm for frustrated quantum antiferromagnets.
abstract: Frustrated antiferromagnets are important materials whose quantum Monte Carlo simulation suffers from a severe sign problem. We construct a nested cluster algorithm which uses a powerful strategy to address this problem. For the spin 1/2 Heisenberg antiferromagnet on a kagome and on a frustrated square lattice the sign problem is eliminated for large systems. The method is applicable to general lattice geometries but limited to moderate temperatures.
authors.affiliation: Institute for Theoretical Physics, Bern University, Sidlerstrasse 5, 3012 Bern, Switzerland.
authors.forename: M
authors.initials: M
authors.lastname: Nyfeler
authors.forename: F-J
authors.initials: FJ
authors.lastname: Jiang
authors.forename: F
authors.initials: F
authors.lastname: Kämpfer
authors.forename: U-J
authors.initials: UJ
authors.lastname: Wiese