Reaching the ground state of a quantum spin glass using a zero-temperature quantum Monte Carlo method

Arnab Das and Bikas K. Chakrabarti
Phys. Rev. E 78, 061121 – Published 19 December 2008

Abstract

Here we discuss the annealing behavior of an infinite-range ±J Ising spin glass in the presence of a transverse field using a zero-temperature quantum Monte Carlo method. Within the simulation scheme, we demonstrate that quantum annealing not only helps finding the ground state of a classical spin glass, but can also help simulating the ground state of a quantum spin glass, in particular, when the transverse field is low, much more efficiently.

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  • Received 16 May 2008

DOI:https://doi.org/10.1103/PhysRevE.78.061121

©2008 American Physical Society

Authors & Affiliations

Arnab Das*

  • The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34014 Trieste, Italy

Bikas K. Chakrabarti

  • Theoretical Condensed Matter Physics Division and Center for Applied Mathematics and Computational Science, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India

  • *arnabdas@ictp.it
  • bikask.chakrabarti@saha.ac.in

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Issue

Vol. 78, Iss. 6 — December 2008

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