Theory of quantum radiation observed as sonoluminescence
| dc.creator | Eberlein, Claudia | |
| dc.date | 1995-06-15 | |
| dc.date.accessioned | 2026-07-07T12:04:21Z | |
| dc.date.available | 2026-07-07T12:04:21Z | |
| dc.description | Sonoluminescence is explained in terms of quantum radiation by moving interfaces between media of different polarizability. In a stationary dielectric the zero-point fluctuations of the electromagnetic field excite virtual two-photon states which become real under perturbation due to motion of the dielectric. The sonoluminescent bubble is modelled as an optically empty cavity in a homogeneous dielectric. The problem of the photon emission by a cavity of time-dependent radius is handled in a Hamiltonian formalism which is dealt with perturbatively up to first order in the velocity of the bubble surface over the speed of light. A parameter-dependence of the zero-order Hamiltonian in addition to the first-order perturbation calls for a new perturbative method combining standard perturbation theory with an adiabatic approximation. In this way the transition amplitude from the vacuum into a two-photon state is obtained, and expressions for the single-photon spectrum and the total energy radiated during one flash are given both in full and in the short-wavelengths approximation when the bubble is larger than the wavelengths of the emitted light. It is shown analytically that the spectral density has the same frequency-dependence as black-body radiation; this is purely an effect of correlated quantum fluctuations at zero temperature. The present theory clarifies a number of hitherto unsolved problems and suggests explanations for several more. Possible experiments that discriminate this from other theories of sonoluminescence are proposed. | |
| dc.description | Latex file, 28 pages, postscript file with 3 figs. attached | |
| dc.identifier | https://arxiv.org/abs/quant-ph/9506024 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/9506024 | |
| dc.identifier | Phys.Rev.A53:2772-2787,1996 | |
| dc.identifier | doi:10.1103/PhysRevA.53.2772 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/208107 | |
| dc.subject | Quantum Physics | |
| dc.subject | Condensed Matter | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Theory of quantum radiation observed as sonoluminescence | |
| dc.type | text |