Sonoluminescence: Bogolubov coefficients for the QED vacuum of a time-dependent dielectric bubble

Details Sonoluminescence: Bogolubov coefficients for the QED vacuum of a time-dependent dielectric bubble Sonoluminescence: Bogolubov coefficients for the QED vacuum of a time-dependent dielectric bubble

1998-05-08

arxiv.org/abs/quant-ph/9805023v2

Phys.Rev.Lett. 83 (1999) 678-681

Physics

Quantum Physics

4 pages, RevTeX, 2 figures (.eps file) included with graphics.sty. Major revisions: physical scenario clarified, additional nu

Scientific paper

10.1103/PhysRevLett.83.678

We extend Schwinger's ideas regarding sonoluminescence by explicitly calculating the Bogolubov coefficients relating the QED vacuum states associated with changes in a dielectric bubble. Sudden (non-adiabatic) changes in the refractive index lead to an efficient production of real photons with a broadband spectrum, and a high-frequency cutoff that arises from the asymptotic behaviour of the dielectric constant.

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