R. Stassi, A. Ridolfo, O. Di Stefano, M. J. Hartmann, S. Savasta
The dynamical Casimir effect predicts that vacuum amplification effects, resulting in the creation of real particles out of vacuum fluctuations, are induced by rapidly modulating the boundary conditions of a quantum field. Here we show that a spontaneous release of virtual photons from the quantum vacuum can occur in a quantum optical system in the ultrastrong coupling regime. In contrast to the dynamical Casimir effect and other pair creation mechanisms, this phenomenon does not require external forces or time dependent parameters. It resembles the production of particles during the early universe expansion induced by the decay of a false vacuum according to inflationary cosmology.
View original:
http://arxiv.org/abs/1210.2367
No comments:
Post a Comment