Generalized Casimir forces in non-equilibrium systems
arXiv:cond-mat/0611233 · doi:10.1103/PhysRevE.76.011113
Abstract
In the present work we propose a method to determine fluctuation induced forces in non equilibrium systems. These forces are the analogue of the well known Casimir forces, which were originally introduced in Quantum Field theory and later extended to the area of Critical Phenomena. The procedure starts from the observation that many non equilibrium systems exhibit long-range correlations and the associated structure factors diverge in the long wavelength limit. The introduction of external bodies into such systems in general modifies the spectrum of these fluctuations and leads to the appearance of a net force between these bodies. The mechanism is illustrated by means of a simple example: a reaction diffusion equation with random noises.
Submitted to Europhysics Letters. 7 pages, 2 figures
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- Out of equilibrium thermal Casimir effect in a model polarizable material
- Dynamical approach to the Casimir effect
- Surface-induced non-equilibrium dynamics and critical Casimir forces for model B in film geometry
- Casimir force in dense confined electrolytes
- Soft inclusion in a confined fluctuating active gel
- Breakdown of effective temperature, power law interactions and self-propulsion in a momentum conserving active fluid
- Casimir effect between pinned particles in two-dimensional jammed systems
- Stochastic Quantization and Casimir Forces