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Superadiabatic forces in Brownian many-body dynamics.

Fortini, A, de Las Heras, D, Brader, JM and Schmidt, M (2014) Superadiabatic forces in Brownian many-body dynamics. Phys Rev Lett, 113 (16).

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Theoretical approaches to nonequilibrium many-body dynamics generally rest upon an adiabatic assumption, whereby the true dynamics is represented as a sequence of equilibrium states. Going beyond this simple approximation is a notoriously difficult problem. For the case of classical Brownian many-body dynamics, we present a simulation method that allows us to isolate and precisely evaluate superadiabatic correlations and the resulting forces. Application of the method to a system of one-dimensional hard particles reveals the importance for the dynamics, as well as the complexity, of these nontrivial out-of-equilibrium contributions. Our findings help clarify the status of dynamical density functional theory and provide a rational basis for the development of improved theories.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
de Las Heras, D
Brader, JM
Schmidt, M
Date : 17 October 2014
DOI : 10.1103/PhysRevLett.113.167801
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:19
Last Modified : 24 Jan 2020 23:48

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