arXiv 0806.15932008-06quant-phgr-qchep-thphysics.comp-ph

Functional minimization method addressed to the vacuum finding for an arbitrary driven quantum oscillator

S. V. Anischenko, S. L. Cherkas, V. L. Kalashnikov

备注：: 9 pages
发表信息：: Nonlinear Phenomena in Complex Systems v.12 p.16-26 (2009)

英文摘要：

The old problem exists for a driven (time-dependent) quantum oscillator: to differ the true vacuum state from the squeezed one. We suggest finding the true vacuum state by minimization of the functional containing the difference of the potential and kinetic energies of oscillator. Analytical and numerical examples confirming this offer are considered.

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