Nonstationary Casimir Effect and Dynamical Symmetries

Authors: V.I. MAN'KO

Abstract: Dynamical symmetry of photons in a resonator with moving boundaries is shown to be inhomogeneous sympletic group. Analogs of Casimir effect like prediction of creation of phonons in liquid helium with varying boundary parameters are discussed. The symplectic tomography procedure to measure quantum states of modes in resonator is reviewed.