Nonequilibrium Work on Spin Glasses in Longitudinal and Transverse Fields
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概要
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We derive a number of exact relations between equilibrium and nonequilibrium quantities for spin glasses in external fields using the Jarzynski equality and gauge symmetry. For randomly-distributed longitudinal fields, a lower bound is established for the work done on the system in nonequilibrium processes, and identities are proven to relate equilibrium and nonequilibrium quantities. In the case of uniform transverse fields, identities are proven between physical quantities and exponentiated work done to the system at different parts of the phase diagram with the context of quantum annealing in mind. Additional relations are given, which relate the exponentiated work in quantum and simulated (classical) annealing. It is also suggested that the Jarzynski equality may serve as a guide to develop a method to perform quantum annealing under non-adiabatic conditions.
- 2011-08-15
著者
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Nishimori Hidetoshi
Department Of Physics Facuilty Of Science Tokyo Institute Of Technology
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Ohzeki Masayuki
Department Of Physics Tokyo Institute Of Technology
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Ohzeki Masayuki
Department of Systems Science, Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan
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Katsuda Hitoshi
Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan
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