Superadiabatic forces in brownian many-body dynamics
- Fortini, Andrea Theoretische Physik II, Physikalisches Institut, Universität Bayreuth, Bayreuth, Germany
- Heras, Daniel de las Theoretische Physik II, Physikalisches Institut, Universität Bayreuth, Bayreuth, Germany
- Brader, Joseph M. Soft Matter Theory, University of Fribourg, Switzerland
- Schmidt, Matthias Theoretische Physik II, Physikalisches Institut, Universität Bayreuth, Bayreuth, Germany
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13.10.2014
Published in:
- Physical Review Letters. - 2014, vol. 113, no. 16, p. 167801
English
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.
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 233231
- DOI 10.1103/PhysRevLett.113.167801
- Persistent URL
- https://folia.unifr.ch/unifr/documents/304044
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