Computation and visualization of casimir forces in arbitrary geometries: Nonmonotonic lateral-wall forces and the failure of proximity-force approximations

Alejandro Rodriguez, Mihai Ibanescu, Davide Iannuzzi, Federico Capasso, J. D. Joannopoulos, Steven G. Johnson

Research output: Contribution to journalArticlepeer-review

93 Scopus citations

Abstract

We present a method of computing Casimir forces for arbitrary geometries, with any desired accuracy, that can directly exploit the efficiency of standard numerical-electromagnetism techniques. Using the simplest possible finite-difference implementation of this approach, we obtain both agreement with past results for cylinder-plate geometries, and also present results for new geometries. In particular, we examine a pistonlike problem involving two dielectric and metallic squares sliding between two metallic walls, in two and three dimensions, respectively, and demonstrate nonadditive and nonmonotonic changes in the force due to these lateral walls.

Original languageEnglish (US)
Article number080401
JournalPhysical review letters
Volume99
Issue number8
DOIs
StatePublished - Aug 21 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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