Irreversible work reduction by disorder in many-body quantum systems
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 transvers...
| Main Authors: | , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2018
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/89422 http://hdl.handle.net/10220/47056 |
| _version_ | 1811679128783421440 |
|---|---|
| author | Zheng, Yuanjian Poletti, Dario |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Zheng, Yuanjian Poletti, Dario |
| author_sort | Zheng, Yuanjian |
| collection | NTU |
| description | 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. |
| first_indexed | 2024-10-01T03:04:14Z |
| format | Journal Article |
| id | ntu-10356/89422 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:04:14Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/894222023-02-28T19:36:29Z Irreversible work reduction by disorder in many-body quantum systems Zheng, Yuanjian Poletti, Dario School of Physical and Mathematical Sciences MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit DRNTU::Science::Physics Irreversible Work Reduction Quantum 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. MOE (Min. of Education, S’pore) Published version 2018-12-18T06:26:41Z 2019-12-06T17:25:09Z 2018-12-18T06:26:41Z 2019-12-06T17:25:09Z 2018 Journal Article 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 2470-0045 https://hdl.handle.net/10356/89422 http://hdl.handle.net/10220/47056 10.1103/PhysRevE.98.052140 en Physical Review E © 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: [http://dx.doi.org/10.1103/PhysRevE.98.052140]. 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." 6 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics Irreversible Work Reduction Quantum Zheng, Yuanjian Poletti, Dario Irreversible work reduction by disorder in many-body quantum systems |
| title | Irreversible work reduction by disorder in many-body quantum systems |
| title_full | Irreversible work reduction by disorder in many-body quantum systems |
| title_fullStr | Irreversible work reduction by disorder in many-body quantum systems |
| title_full_unstemmed | Irreversible work reduction by disorder in many-body quantum systems |
| title_short | Irreversible work reduction by disorder in many-body quantum systems |
| title_sort | irreversible work reduction by disorder in many body quantum systems |
| topic | DRNTU::Science::Physics Irreversible Work Reduction Quantum |
| url | https://hdl.handle.net/10356/89422 http://hdl.handle.net/10220/47056 |
| work_keys_str_mv | AT zhengyuanjian irreversibleworkreductionbydisorderinmanybodyquantumsystems AT polettidario irreversibleworkreductionbydisorderinmanybodyquantumsystems |