| Issue |
EPL
Volume 106, Number 5, June 2014
|
|
|---|---|---|
| Article Number | 56005 | |
| Number of page(s) | 6 | |
| Section | Condensed Matter: Structural, Mechanical and Thermal Properties | |
| DOI | https://doi.org/10.1209/0295-5075/106/56005 | |
| Published online | 10 June 2014 | |
Direct simulation of critical Casimir forces
Fakultät für Physik und CENIDE, Universität Duisburg-Essen - D-47048 Duisburg, Germany
Received: 26 March 2014
Accepted: 16 May 2014
We present a new Monte Carlo method to calculate Casimir forces acting on objects in a near-critical fluid, considering the two basic cases of a wall and a sphere embedded in a two-dimensional Ising medium. During the simulation, the objects are moved through the system with appropriate statistical weights, and consequently are attracted or repelled from the system boundaries depending on the boundary conditions. The distribution function of the object position is utilized to obtain the residual free energy, or Casimir potential, of the configuration as well as the corresponding Casimir force. The results are in perfect agreement with known exact results. The method can easily be generalized to more complicated geometries, to higher dimensions, and also to colloidal suspensions with many particles.
PACS: 64.60.an – Finite-size systems / 05.50.+q – Lattice theory and statistics (Ising, Potts, etc.) / 82.70.Dd – Colloids
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.