Journal
PHYSICAL REVIEW LETTERS
Volume 114, Issue 19, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.114.198301
Keywords
-
Categories
Funding
- EPSRC [EP/J007404]
- Swedish Research Council [350-2012-274]
- German Research Foundation (DFG) [WI 4170/1-2]
- I-CORE Program of the Planning and Budgeting Committee of the Israel Science Foundation
- Royal Society
- ANR project BACTTERNS
- National Science Foundation [NSF PHY11-25925]
- EPSRC [EP/J007404/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J007404/1] Funding Source: researchfish
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1206323] Funding Source: National Science Foundation
Ask authors/readers for more resources
We derive a microscopic expression for the mechanical pressure P in a system of spherical active Brownian particles at density rho. Our exact result relates P, defined as the force per unit area on a bounding wall, to bulk correlation functions evaluated far away from the wall. It shows that (i) P(rho) is a state function, independent of the particle-wall interaction; (ii) interactions contribute two terms to P, one encoding the slow-down that drives motility-induced phase separation, and the other a direct contribution well known for passive systems; and (iii) P is equal in coexisting phases. We discuss the consequences of these results for the motility-induced phase separation of active Brownian particles and show that the densities at coexistence do not satisfy a Maxwell construction on P.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available