Geometry-temperature interplay in the Casimir effect
We discuss Casimir phenomena which are dominated by long-range fluctuations. A prime example is given by "geothermal" Casimir phenomena where thermal fluctuations in open Casimir geometries can induce significantly enhanced thermal corrections. We illustrate the underlying mechanism with t...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2010
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| In: |
International journal of modern physics. A, Particles and fields, gravitation, cosmology
Year: 2010, Volume: 25, Issue: 11, Pages: 2279-2292 |
| ISSN: | 1793-656X |
| DOI: | 10.1142/S0217751X10049554 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1142/S0217751X10049554 Verlag, lizenzpflichtig, Volltext: https://worldscientific.com/doi/abs/10.1142/S0217751X10049554 
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| Author Notes: | H. Gies and A. Weber |
| Summary: | We discuss Casimir phenomena which are dominated by long-range fluctuations. A prime example is given by "geothermal" Casimir phenomena where thermal fluctuations in open Casimir geometries can induce significantly enhanced thermal corrections. We illustrate the underlying mechanism with the aid of the inclined-plates configuration, giving rise to enhanced power-law temperature dependences compared to the parallel-plates case. In limiting cases, we find numerical evidence even for fractional power laws induced by long-range fluctuations. We demonstrate that thermal energy densities for open geometries are typically distributed over length scales of 1/T. As an important consequence, approximation methods for thermal corrections based on local energy-density estimates such as the proximity-force approximation are expected to become unreliable even at small surface separations. |
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| Item Description: | Gesehen am 13.03.2023 |
| Physical Description: | Online Resource |
| ISSN: | 1793-656X |
| DOI: | 10.1142/S0217751X10049554 |