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arXiv quant-ph/98110761998-11quant-ph

Time-dependent Schrödinger equations having isomorphic symmetry algebras. II. Symmetry algebras, coherent and squeezed states

Michael Martin Nieto, D. Rodney Truax

备注：: LaTeX, 22 pages, new format, edited, with added discussion of the classical motion
发表信息：: J.Math.Phys. 41 (2000) 2753-2767
DOI：: 10.1063/1.533269

英文摘要：

Using the transformations from paper I, we show that the Schrödinger equations for: (1)systems described by quadratic Hamiltonians, (2) systems with time-varying mass, and (3) time-dependent oscillators, all have isomorphic Lie space-time symmetry algebras. The generators of the symmetry algebras are obtained explicitly for each case and sets of number-operator states are constructed. The algebras and the states are used to compute displacement-operator coherent and squeezed states. Some properties of the coherent and squeezed states are calculated. The classical motion of these states is deomonstrated.

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