Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics
Fluctuations in nonequilibrium steady states generically lead to power law decay of correlations for conserved quantities. Embedded bodies which constrain fluctuations, in turn, experience fluctuation induced forces. We compute these forces for the simple case of parallel slabs in a driven diffusive...
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| Format: | Article |
| Language: | English |
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American Physical Society
2015
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| Online Access: | http://hdl.handle.net/1721.1/97411 https://orcid.org/0000-0002-1112-5912 |
| _version_ | 1826195488149340160 |
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| author | Aminov, Avi Kafri, Yariv Kardar, Mehran |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Aminov, Avi Kafri, Yariv Kardar, Mehran |
| author_sort | Aminov, Avi |
| collection | MIT |
| description | Fluctuations in nonequilibrium steady states generically lead to power law decay of correlations for conserved quantities. Embedded bodies which constrain fluctuations, in turn, experience fluctuation induced forces. We compute these forces for the simple case of parallel slabs in a driven diffusive system. Our model calculations show that the force falls off with slab separation d as k[subscript B]T/d (at temperature T, and in all spatial dimensions) but can be attractive or repulsive. Unlike the equilibrium Casimir force, the force amplitude is nonuniversal and explicitly depends on dynamics. The techniques introduced can be used to study pressure and fluctuation induced forces in a broad class of nonequilibrium systems. |
| first_indexed | 2024-09-23T10:13:28Z |
| format | Article |
| id | mit-1721.1/97411 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T10:13:28Z |
| publishDate | 2015 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/974112022-09-30T19:42:23Z Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics Aminov, Avi Kafri, Yariv Kardar, Mehran Massachusetts Institute of Technology. Department of Physics Kardar, Mehran Fluctuations in nonequilibrium steady states generically lead to power law decay of correlations for conserved quantities. Embedded bodies which constrain fluctuations, in turn, experience fluctuation induced forces. We compute these forces for the simple case of parallel slabs in a driven diffusive system. Our model calculations show that the force falls off with slab separation d as k[subscript B]T/d (at temperature T, and in all spatial dimensions) but can be attractive or repulsive. Unlike the equilibrium Casimir force, the force amplitude is nonuniversal and explicitly depends on dynamics. The techniques introduced can be used to study pressure and fluctuation induced forces in a broad class of nonequilibrium systems. National Science Foundation (U.S.) (Grant DMR-12-06323) 2015-06-15T14:10:05Z 2015-06-15T14:10:05Z 2015-06 2015-06-12T22:00:03Z Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/97411 Aminov, Avi, Yariv Kafri, and Mehran Kardar. “Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics.” Physical Review Letters 114, no. 23 (June 2015). © 2015 American Physical Society https://orcid.org/0000-0002-1112-5912 en http://dx.doi.org/10.1103/PhysRevLett.114.230602 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Aminov, Avi Kafri, Yariv Kardar, Mehran Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title | Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title_full | Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title_fullStr | Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title_full_unstemmed | Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title_short | Fluctuation-Induced Forces in Nonequilibrium Diffusive Dynamics |
| title_sort | fluctuation induced forces in nonequilibrium diffusive dynamics |
| url | http://hdl.handle.net/1721.1/97411 https://orcid.org/0000-0002-1112-5912 |
| work_keys_str_mv | AT aminovavi fluctuationinducedforcesinnonequilibriumdiffusivedynamics AT kafriyariv fluctuationinducedforcesinnonequilibriumdiffusivedynamics AT kardarmehran fluctuationinducedforcesinnonequilibriumdiffusivedynamics |