Lifshitz theory of Casimir forces at finite temperature

Ninham, Barry W.; Daicic, John

doi:10.1103/physreva.57.1870

Cited by 62 publications

(63 citation statements)

References 32 publications

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“…These fluctuating charges are screened very effectively by a dielectric constant intervening between the walls and the system. For two dipoles this screening is proportional to On the other hand, if the cavities are filled with liquids with various values of μ from 1.7 to 4.02 (and ε being constant around ~32.7-34.82; case of methanol and nitrobenzene, respectively), the Casimir force is once more repulsive with an intensity of ~8.25 fN, indicating that the permeability of the liquids into the cavity is almost not affecting the Casimir force at all, in agreement with Lifshitz theory, where all magnetic properties of the involved media are neglected with the magnetic permeability set equal to 1 [27].…”

Section: Fig 5 (Color Online)supporting

confidence: 65%

Casimir forces of metallic microstructures into cavities

2015

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A novel theoretical estimate of the Casimir force of a metallic structure embedded into a cubic cavity is proposed. We demonstrate that by calculating the eigenmodes of the system we can determine the Casimir force which can be either attractive or repulsive by simply changing the geometry of the structures relative to the walls of the cavity. In this analysis, several cases of structures are taken into account from rectangular slabs to chiral "omega" particles, and the predicted data are consistent with recent literature. We demonstrate that the side walls of the studied cavity contribute decisively to the repulsive Casimir force between the system and the nearby top surface of the cavity. Finally, we have provided evidence that the medium embedded into the studied cavity (and especially its permittivity) can change the intensity of the Casimir force, while its repulsive nature once established (thanks to favorable geometrical features) remain quite robust. PACS number(s): 42.50.Ct, 78.20.Ek, 81.05.Xj.

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confidence: 65%

Casimir forces of metallic microstructures into cavities

2015

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“…Our starting point is the above formula (A8) for the ineraction of two perfectly conducting plates accross an intervening plasma as re-written by Ninham and Daicic. [29,35,36]…”

Section: Appendix B: Asymptotic Casimir Free Energy In a Plasmamentioning

confidence: 99%

Casimir forces in a plasma: possible connections to Yukawa potentials

et al. 2014

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We present theoretical and numerical results for the screened Casimir effect between perfect metal surfaces in a plasma. We show how the Casimir effect in an electron-positron plasma can provide an important contribution to nuclear interactions. Our results suggest that there is a connection between Casimir forces and nucleon forces mediated by mesons. Correct nuclear energies and meson masses appear to emerge naturally from the screened Casimir-Lifshitz effect.

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“…This is misleading. It is due to the quantum nature of light [11,12]; this becomes obvious at the large separation limit where the weakening is independent of the speed of light.…”

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confidence: 99%