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arXiv · 1701.08775

Quantum Monte Carlo Annealing with Multi-Spin Dynamics

Guglielmo Mazzola·Matthias Troyer
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Abstract

We introduce a novel Simulated Quantum Annealing (SQA) algorithm which employs a multispin quantum fluctuation operator. At variance with the usual transverse field, short-range two-spin flip interactions are included in the driver Hamiltonian. A Quantum Monte Carlo algorithm, capable of efficiently simulating large disordered systems, is described and tested. A first application to SQA, on a random square lattice Ising spin glass reveals that the multi-spin driver Hamiltonian improves upon the usual transverse field. This work paves the way for more systematic investigations using multi-spin quantum fluctuations on a broader range of problems.

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Guglielmo Mazzola, Matthias Troyer. 2017-01-30. Quantum Monte Carlo Annealing with Multi-Spin Dynamics. https://doi.org/10.1088/1742-5468/aa6de1

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