Quantum annealing in a kinetically constrained system

Das, Arnab ; Chakrabarti, Bikas K. ; Stinchcombe, Robin B. (2005) Quantum annealing in a kinetically constrained system Physical Review E, 72 (2). pp. 1-5. ISSN 1063-651X

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Official URL: http://pre.aps.org/abstract/PRE/v72/i2/e026701

Related URL: http://dx.doi.org/10.1103/PhysRevE.72.026701


Classical and quantum annealing is discussed in the case of a generalized kinetically constrained model, where the relaxation dynamics of a system with trivial ground state is retarded by the appearance of energy barriers in the relaxation path, following a local kinetic rule. Effectiveness of thermal and quantum fluctuations in overcoming these kinetic barriers to reach the ground state are studied. It has been shown that for certain barrier characteristics, quantum annealing might by far surpass its thermal counter part in reaching the ground state faster.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society.
Keywords:Quantum Annealing; Kinetically Constrained Systems; East Model
ID Code:5884
Deposited On:19 Oct 2010 10:23
Last Modified:20 May 2011 07:23

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