dorsal/arxiv
View SchemaFluctuation Theorems of Brownian Particles Controlled by a Maxwell's Demon
| Authors | Kyung Hyuk Kim, Hong Qian |
|---|---|
| Categories | |
| ArXiv ID | physics/0601085 |
| URL | https://arxiv.org/abs/physics/0601085 |
| DOI | 10.1103/PhysRevE.75.022102 |
| Journal | Phys. Rev. E 75, 022102 (2007) |
Abstract
We study the stochastic dynamics of Brownian particles in a heat bath and subject to an active feedback control by an external, Maxwell's demon-like agent. The agent uses the information of the velocity of a particle and reduces its thermal agitation by applying a force. The entropy of the particle and the heat bath as a whole, thus, reduces. Entropy pumping [Phys. Rev. Lett. 93, 120602 (2004)] quantifies the entropy reduction. We discover that the entropy pumping has a dual role of work and heat contributing to free energy changes and entropy production of the open-system with the feedback control. Generalized Jarzynski equality and fluctuation theorems for work functional and entropy production are developed with the presence of the entropy pumping.
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"abstract": "We study the stochastic dynamics of Brownian particles in a heat bath and\nsubject to an active feedback control by an external, Maxwell\u0027s demon-like\nagent. The agent uses the information of the velocity of a particle and reduces\nits thermal agitation by applying a force. The entropy of the particle and the\nheat bath as a whole, thus, reduces. Entropy pumping [Phys. Rev. Lett. 93,\n120602 (2004)] quantifies the entropy reduction. We discover that the entropy\npumping has a dual role of work and heat contributing to free energy changes\nand entropy production of the open-system with the feedback control.\nGeneralized Jarzynski equality and fluctuation theorems for work functional and\nentropy production are developed with the presence of the entropy pumping.",
"arxiv_id": "physics/0601085",
"authors": [
"Kyung Hyuk Kim",
"Hong Qian"
],
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"physics.class-ph"
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"doi": "10.1103/PhysRevE.75.022102",
"journal_ref": "Phys. Rev. E 75, 022102 (2007)",
"title": "Fluctuation Theorems of Brownian Particles Controlled by a Maxwell\u0027s Demon",
"url": "https://arxiv.org/abs/physics/0601085"
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