Casimir forces in the time domain: I. Theory

Details Casimir forces in the time domain: I. Theory Casimir forces in the time domain: I. Theory

2009-04-01

arxiv.org/abs/0904.0267v2

Physical Review A, 80(1):012115, 2009

Physics

Quantum Physics

Scientific paper

We introduce a method to compute Casimir forces in arbitrary geometries and for arbitrary materials based on the finite-difference time-domain (FDTD) scheme. The method involves the time-evolution of electric and magnetic fields in response to a set of current sources, in a modified medium with frequency-independent conductivity. The advantage of this approach is that it allows one to exploit existing FDTD software, without modification, to compute Casimir forces. In this manuscript, part I, we focus on the derivation, implementation choices, and essential properties of the time-domain algorithm, considered both analytically and illustrated in the simplest parallel-plate geometry. Part II presents results for more complex two- and three-dimensional geometries.

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