Vacuum effects in a vibrating cavity: time refraction, dynamical Casimir effect, and effective Unruh acceleration

Details Vacuum effects in a vibrating cavity: time refraction, dynamical Casimir effect, and effective Unruh acceleration Vacuum effects in a vibrating cavity: time refraction, dynamical Casimir effect, and effective Unruh acceleration

2008-06-04

arxiv.org/abs/0806.0742v1

Phys.Lett.A372:5621-5624,2008

Physics

Quantum Physics

5 pages, version to appear in Physics Letters A

Scientific paper

10.1016/j.physleta.2008.06.084

Two different quantum processes are considered in a perturbed vacuum cavity: time refraction and dynamical Casimir effect. They are shown to be physically equivalent, and are predicted to be unstable, leading to an exponential growth in the number of photons created in the cavity. The concept of an effective Unruh acceleration for these processes is also introduced, in order to make a comparison in terms of radiation efficiency, with the Unruh radiation associated with an accelerated frame in unbounded vacuum.

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