Calculation of nonzero-temperature Casimir forces in the time domain

Kai Pan; Alexander P. McCauley; Alejandro W. Rodriguez; M. T.Homer Reid; Jacob K. White; Steven G. Johnson

doi:10.1103/PhysRevA.83.040503

Calculation of nonzero-temperature Casimir forces in the time domain

Kai Pan, Alexander P. McCauley, Alejandro W. Rodriguez, M. T.Homer Reid, Jacob K. White, Steven G. Johnson

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We show how to compute Casimir forces at nonzero temperatures with time-domain electromagnetic simulations, for example, using a finite-difference time-domain (FDTD) method. Compared to our previous zero-temperature time-domain method, only a small modification is required, but we explain that some care is required to properly capture the zero-frequency contribution. We validate the method against analytical and numerical frequency-domain calculations, and show a surprising high-temperature disappearance of a nonmonotonic behavior previously demonstrated in a pistonlike geometry.

Original language	English (US)
Article number	040503
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	83
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.83.040503
State	Published - Apr 29 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1103/PhysRevA.83.040503

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AU - Pan, Kai

AU - McCauley, Alexander P.

AU - Rodriguez, Alejandro W.

AU - Reid, M. T.Homer

AU - White, Jacob K.

AU - Johnson, Steven G.

PY - 2011/4/29

Y1 - 2011/4/29

N2 - We show how to compute Casimir forces at nonzero temperatures with time-domain electromagnetic simulations, for example, using a finite-difference time-domain (FDTD) method. Compared to our previous zero-temperature time-domain method, only a small modification is required, but we explain that some care is required to properly capture the zero-frequency contribution. We validate the method against analytical and numerical frequency-domain calculations, and show a surprising high-temperature disappearance of a nonmonotonic behavior previously demonstrated in a pistonlike geometry.

AB - We show how to compute Casimir forces at nonzero temperatures with time-domain electromagnetic simulations, for example, using a finite-difference time-domain (FDTD) method. Compared to our previous zero-temperature time-domain method, only a small modification is required, but we explain that some care is required to properly capture the zero-frequency contribution. We validate the method against analytical and numerical frequency-domain calculations, and show a surprising high-temperature disappearance of a nonmonotonic behavior previously demonstrated in a pistonlike geometry.

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Calculation of nonzero-temperature Casimir forces in the time domain

Abstract

All Science Journal Classification (ASJC) codes

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