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arXiv · 1512.00931

Quantum cluster algorithm for frustrated Ising models in a transverse field

Sounak Biswas·Geet Rakala·Kedar Damle
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Abstract

Working within the stochastic series expansion framework, we introduce and characterize a new quantum cluster algorithm for quantum Monte Carlo simulations of transverse field Ising models with frustrated Ising exchange interactions. As a demonstration of the capabilities of this new algorithm, we show that a relatively small, ferromagnetic next-nearest neighbour coupling drives the transverse field Ising antiferromagnet on the triangular lattice from an antiferromagnetic three-sublattice ordered state at low temperature to a ferrimagnetic three-sublattice ordered state.

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Sounak Biswas, Geet Rakala, Kedar Damle. 2015-12-03. Quantum cluster algorithm for frustrated Ising models in a transverse field. https://doi.org/10.1103/physrevb.93.235103

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