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Title: Irreversible work reduction by disorder in many-body quantum systems
Authors: Zheng, Yuanjian
Poletti, Dario
Keywords: DRNTU::Science::Physics
Irreversible Work Reduction
Issue Date: 2018
Source: Zheng, Y., & Poletti, D. (2018). Irreversible work reduction by disorder in many-body quantum systems. Physical Review E, 98(5), 052140-. doi: 10.1103/PhysRevE.98.052140
Series/Report no.: Physical Review E
Abstract: We study the effect of disorder on work exchange associated with quantum Hamiltonian processes by considering an Ising spin chain in which the strength of coupling between spins are randomly drawn from either Normal or Gamma distributions. The chain is subjected to a quench of the external transverse field, which induces this exchange of work. In particular, we study the irreversible work incurred by a quench as a function of the initial temperature, field strength, and magnitude of the disorder. While presence of weak disorder generally increases the irreversible work generated, disorder of sufficient strength can instead reduce it, giving rise to a disorder-induced lubrication effect. This reduction of irreversible work depends on the nature of the distribution considered and can either arise from acquiring the behavior of an effectively smaller quench for the Normal-distributed spin couplings or that of effectively single spin dynamics in the case of Gamma-distributed couplings.
ISSN: 2470-0045
DOI: 10.1103/PhysRevE.98.052140
Rights: © 2018 American Physical Society. This paper was published in Physical Review E and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: []. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law."
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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