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Perturbative superluminal censorship and the null energy condition
Matt Visser, Bruce Bassett, Stefano Liberati
We argue that ``effective'' superluminal travel, potentially caused by the tipping over of light cones in Einstein gravity, is always associated with violations of the null energy…
Sonoluminescence as a QED vacuum effect. II: Finite Volume Effects
Stefano Liberati, Matt Visser, Francesco Belgiorno +1
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 o…
Sonoluminescence as a QED vacuum effect. I: The Physical Scenario
Stefano Liberati, Matt Visser, Francesco Belgiorno +1
Several years ago Schwinger proposed a physical mechanism for sonoluminescence in terms of changes in the properties of the quantum-electrodynamic (QED) vacuum state. This mechanis…
Sonoluminescence: Two-photon correlations as a test of thermality
Francesco Belgiorno, Stefano Liberati, Matt Visser +1
In this Letter we propose a fundamental test for probing the thermal nature of the spectrum emitted by sonoluminescence. We show that two-photon correlations can in principle discr…