New experimental results on the Casimir effect

Mostepanenko, V. M.

doi:10.1590/s0103-97332000000200012

Cited by 13 publications

(7 citation statements)

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“…This effect was first predicted in 1948 by Casimir [4] who investigated the quantum vacuum fluctuations of the electromagnetic field occurring inside two large parallel conducting plates. His result was first confirmed by Sparnaay in 1958 [5] and later by other researchers [6] (see also [7,8,9,10,11,12] for experimental results involving curved-plane surface configurations). It is well known that the modification on the quantum vacuum fluctuations of fields are caused not only by the imposition of boundary conditions but also by the nontrivial topology of the spacetime [1,2].…”

Section: Introductionmentioning

confidence: 74%

Scalar Casimir effect in a high-dimensional cosmic dispiration spacetime

Mota

Mello

Bakke

2018

Int. J. Mod. Phys. D

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In this paper we present a complete and detailed analysis of the calculation of both the Wightman function and the vacuum expectation value of the energy-momentum tensor that arise from quantum vacuum fluctuations of massive and massless scalar fields in the cosmic dispiration spacetime, which is formed by the combination of two topological defects: a cosmic string and a screw dislocation. This spacetime is obtained in the framework of the Einstein-Cartan theory of gravity and is considered to be a chiral space-like cosmic string. For completeness we perform the calculation in a high-dimensional spacetime, with flat extra dimensions. We found closed expressions for the the energy-momentum tensor and, in particular, in (3+1)-dimensions, we compare our results with existing previous ones in the literature for the massless scalar field case.

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Section: Introductionmentioning

confidence: 74%

Scalar Casimir effect in a high-dimensional cosmic dispiration spacetime

Mota

Mello

Bakke

2018

Int. J. Mod. Phys. D

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“…As originally envisaged, and already experimentally verified [19][20][21][22][23][24], the Casimir effect arises when two discharged parallel plates are placed together in vacuum, very closely, at a distance of the order of µm, resulting in an attractive interaction between the plates, as a consequence of the modification of the quantum vacuum fluctuations of the electromagnetic field, the dominant fluctuations over the other fields [25]. The calculation of the intensity of the attractive force, of course, is performed by considering the Minkowski spacetime.…”

Section: Introductionmentioning

confidence: 93%

Quantum vacuum fluctuation effects in a quasi-periodically identified conical spacetime

de Farias,

Mota

2020

Preprint

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We consider a quasi-periodically identified conical spacetime, like the one of a cosmic string or disclination, to investigate nonzero averaged quantum vacuum fluctuations effects on the energymomentum tensor and induced current density associated with a charged scalar field. We obtain exactly closed analytical expressions for the two-point Wightman function and the vacuum expectation value of the field squared, as well as for all components of the energy-momentum tensor. As to the induced current density, due to the quasi-periodic condition used, the only nonzero averaged component found is the azimuthal one. We also compare our results with previous ones found in literature.

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“…The Casimir effect was predicted by H. B. Casimir in 1948 [1] and, although not with great precision, experimentally verified ten years later by M. J. Sparnaay [2]. Since then, it has been confirmed by several highprecision experiments [3][4][5][6][7][8][9], leading currently to one of the most interesting topics of research. The Casimir effect consists of a direct manifestation of the existence of quantum fluctuations of the vacuum and was noted to arise for the first time when considering two parallel conducting plates placed very close to each other in the vacuum, separated by a very small distance when compared with the plates' dimensions.…”

Section: Introductionmentioning

confidence: 97%

Casimir energy and topological mass for a massive scalar field with Lorentz violation

2020

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A Lorentz symmetry violation aether-type theoretical model is considered to investigate the Casimir effect and the generation of topological mass associated with self-interacting massive scalar fields obeying Dirichlet, Newman, and mixed boundary conditions on two large and parallel plates. By adopting the path integral approach, we find the effective potential at one-and two-loop corrections, which provides both the energy density and the topological mass when taken in the ground state of the scalar field. We then analyze how these quantities are affected by the Lorentz symmetry violation and compare the results with previous ones found in literature.

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New experimental results on the Casimir effect

Cited by 13 publications

References 0 publications

Scalar Casimir effect in a high-dimensional cosmic dispiration spacetime

Scalar Casimir effect in a high-dimensional cosmic dispiration spacetime

Quantum vacuum fluctuation effects in a quasi-periodically identified conical spacetime

Casimir energy and topological mass for a massive scalar field with Lorentz violation

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