Hamiltonian approach to the dynamical Casimir effect

Details Hamiltonian approach to the dynamical Casimir effect Hamiltonian approach to the dynamical Casimir effect

2006-07-24

arxiv.org/abs/hep-th/0607186v2

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, no figures; version published in Phys. Rev. Lett. 97 (2006) 130401

Scientific paper

10.1103/PhysRevLett.97.130401

A Hamiltonian approach is introduced in order to address some severe problems associated with the physical description of the dynamical Casimir effect at all times. For simplicity, the case of a neutral scalar field in a one-dimensional cavity with partially transmitting mirrors (an essential proviso) is considered, but the method can be extended to fields of any kind and higher dimensions. The motional force calculated in our approach contains a reactive term --proportional to the mirrors' acceleration-- which is fundamental in order to obtain (quasi)particles with a positive energy all the time during the movement of the mirrors --while always satisfying the energy conservation law. Comparisons with other approaches and a careful analysis of the interrelations among the different results previously obtained in the literature are carried out.

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