dorsal/arxiv
View SchemaSonoluminescence as a QED vacuum effect. II: Finite Volume Effects
| Authors | Stefano Liberati, Matt Visser, Francesco Belgiorno, Dennis Sciama |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/9905034 |
| URL | https://arxiv.org/abs/quant-ph/9905034 |
| DOI | 10.1103/PhysRevD.61.085024 |
| Journal | Phys.Rev. D61 (2000) 085024 |
Abstract
In a companion paper [quant-ph/9904013] we have investigated several variations of Schwinger's proposed mechanism for sonoluminescence. We demonstrated that any realistic version of Schwinger's mechanism must depend on extremely rapid (femtosecond) changes in refractive index, and discussed ways in which this might be physically plausible. To keep that discussion tractable, the technical computations in that paper were limited to the case of a homogeneous dielectric medium. In this paper we investigate the additional complications introduced by finite-volume effects. The basic physical scenario remains the same, but we now deal with finite spherical bubbles, and so must decompose the electromagnetic field into Spherical Harmonics and Bessel functions. We demonstrate how to set up the formalism for calculating Bogolubov coefficients in the sudden approximation, and show that we qualitatively retain the results previously obtained using the homogeneous-dielectric (infinite volume) approximation.
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"abstract": "In a companion paper [quant-ph/9904013] we have investigated several\nvariations of Schwinger\u0027s proposed mechanism for sonoluminescence. We\ndemonstrated that any realistic version of Schwinger\u0027s mechanism must depend on\nextremely rapid (femtosecond) changes in refractive index, and discussed ways\nin which this might be physically plausible. To keep that discussion tractable,\nthe technical computations in that paper were limited to the case of a\nhomogeneous dielectric medium. In this paper we investigate the additional\ncomplications introduced by finite-volume effects. The basic physical scenario\nremains the same, but we now deal with finite spherical bubbles, and so must\ndecompose the electromagnetic field into Spherical Harmonics and Bessel\nfunctions. We demonstrate how to set up the formalism for calculating Bogolubov\ncoefficients in the sudden approximation, and show that we qualitatively retain\nthe results previously obtained using the homogeneous-dielectric (infinite\nvolume) approximation.",
"arxiv_id": "quant-ph/9905034",
"authors": [
"Stefano Liberati",
"Matt Visser",
"Francesco Belgiorno",
"Dennis Sciama"
],
"categories": [
"quant-ph",
"cond-mat",
"hep-th"
],
"doi": "10.1103/PhysRevD.61.085024",
"journal_ref": "Phys.Rev. D61 (2000) 085024",
"title": "Sonoluminescence as a QED vacuum effect. II: Finite Volume Effects",
"url": "https://arxiv.org/abs/quant-ph/9905034"
},
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