Ideal bulk pressure of active Brownian particles
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Thomas Speck
- Robert L Jack
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000377508500010&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1103/PhysRevE.93.062605
- eISSN
- 2470-0053
- Externe Identifier
- Clarivate Analytics Document Solution ID: DO0ZT
- PubMed Identifier: 27415318
- ISSN
- 2470-0045
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- PHYSICAL REVIEW E
- Artikelnummer
- ARTN 062605
- Datum der Veröffentlichung
- 2016
- Status
- Published
- Titel
- Ideal bulk pressure of active Brownian particles
- Sub types
- Article
- Ausgabe der Zeitschrift
- 93
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Autoren
- Thomas Speck
- Robert L Jack
- DOI
- 10.1103/physreve.93.062605
- eISSN
- 2470-0053
- ISSN
- 2470-0045
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Physical Review E
- Sprache
- en
- Artikelnummer
- 062605
- Online publication date
- 2016
- Status
- Published online
- Herausgeber
- American Physical Society (APS)
- Herausgeber URL
- http://dx.doi.org/10.1103/physreve.93.062605
- Datum der Datenerfassung
- 2017
- Titel
- Ideal bulk pressure of active Brownian particles
- Ausgabe der Zeitschrift
- 93
Datenquelle: Crossref
- Abstract
- The extent to which active matter might be described by effective equilibrium concepts like temperature and pressure is currently being discussed intensely. Here, we study the simplest model, an ideal gas of noninteracting active Brownian particles. While the mechanical pressure exerted onto confining walls has been linked to correlations between particles' positions and their orientations, we show that these correlations are entirely controlled by boundary effects. We also consider a definition of local pressure, which describes interparticle forces in terms of momentum exchange between different regions of the system. We present three pieces of analytical evidence which indicate that such a local pressure exists, and we show that its bulk value differs from the mechanical pressure exerted on the walls of the system. We attribute this difference to the fact that the local pressure in the bulk does not depend on boundary effects, contrary to the mechanical pressure. We carefully examine these boundary effects using a channel geometry, and we show a virial formula for the pressure correctly predicts the mechanical pressure even in finite channels. However, this result no longer holds in more complex geometries, as exemplified for a channel that includes circular obstacles.
- Addresses
- Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7-9, 55128 Mainz, Germany.
- Autoren
- Thomas Speck
- Robert L Jack
- DOI
- 10.1103/physreve.93.062605
- eISSN
- 2470-0053
- Externe Identifier
- PubMed Identifier: 27415318
- Funding acknowledgements
- Deutsche Forschungsgemeinschaft: SP 1382/3-1
- Open access
- false
- ISSN
- 2470-0045
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Physical review. E
- Sprache
- eng
- Medium
- Print-Electronic
- Online publication date
- 2016
- Paginierung
- 062605
- Datum der Veröffentlichung
- 2016
- Status
- Published
- Datum der Datenerfassung
- 2016
- Titel
- Ideal bulk pressure of active Brownian particles.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 93
Datenquelle: Europe PubMed Central
- Abstract
- The extent to which active matter might be described by effective equilibrium concepts like temperature and pressure is currently being discussed intensely. Here, we study the simplest model, an ideal gas of noninteracting active Brownian particles. While the mechanical pressure exerted onto confining walls has been linked to correlations between particles' positions and their orientations, we show that these correlations are entirely controlled by boundary effects. We also consider a definition of local pressure, which describes interparticle forces in terms of momentum exchange between different regions of the system. We present three pieces of analytical evidence which indicate that such a local pressure exists, and we show that its bulk value differs from the mechanical pressure exerted on the walls of the system. We attribute this difference to the fact that the local pressure in the bulk does not depend on boundary effects, contrary to the mechanical pressure. We carefully examine these boundary effects using a channel geometry, and we show a virial formula for the pressure correctly predicts the mechanical pressure even in finite channels. However, this result no longer holds in more complex geometries, as exemplified for a channel that includes circular obstacles.
- Autoren
- Thomas Speck
- Robert L Jack
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/27415318
- DOI
- 10.1103/PhysRevE.93.062605
- eISSN
- 2470-0053
- Ausgabe der Veröffentlichung
- 6
- Zeitschrift
- Phys Rev E
- Sprache
- eng
- Country
- United States
- Paginierung
- 062605
- Datum der Veröffentlichung
- 2016
- Status
- Published
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2018
- Titel
- Ideal bulk pressure of active Brownian particles.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 93
Datenquelle: PubMed
- Abstract
- The extent to which active matter might be described by effective equilibrium concepts like temperature and pressure is currently being discussed intensely. Here we study the simplest model, an ideal gas of non-interacting active Brownian particles. While the mechanical pressure exerted onto confining walls has been linked to correlations between particles' positions and their orientations, we show that these correlations are entirely controlled by boundary effects. We also consider a definition of local pressure, which describes interparticle forces in terms of momentum exchange between different regions of the system. We present three pieces of analytical evidence which indicate that such a local pressure exists, and we show that its bulk value differs from the mechanical pressure exerted on the walls of the system. We attribute this difference to the fact that the local pressure in the bulk does not depend on boundary effects, contrary to the mechanical pressure. We carefully examine these boundary effects using a channel geometry, and we show a virial formula for the pressure correctly predicts the mechanical pressure even in finite channels. However, this result no longer holds in more complex geometries, as exemplified for a channel that includes circular obstacles.
- Autoren
- Thomas Speck
- Robert L Jack
- Autoren-URL
- http://arxiv.org/abs/1512.00830v2
- Zeitschrift
- Phys. Rev. E
- Schlüsselwörter
- cond-mat.stat-mech
- cond-mat.stat-mech
- cond-mat.soft
- Paginierung
- 062605
- Datum der Veröffentlichung
- 2015
- Herausgeber URL
- http://dx.doi.org/10.1103/PhysRevE.93.062605
- Datum der Datenerfassung
- 2015
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2015
- Titel
- Ideal bulk pressure of active Brownian particles
- Ausgabe der Zeitschrift
- 93
Files
1512.00830v2.pdf
Datenquelle: arXiv
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