3 research outputs found

    ARBITRARY-ORDER HERMITE GENERATING FUNCTIONS FOR COHERENT AND SQUEEZED STATES

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    For use in calculating higher-order coherent- and squeezed- state quantities, we derive generalized generating functions for the Hermite polynomials. They are given by n=0zjn+kHjn+k(x)/(jn+k)!\sum_{n=0}^{\infty}z^{jn+k}H_{jn+k}(x)/(jn+k)!, for arbitrary integers j1j\geq 1 and k0k\geq 0. Along the way, the sums with the Hermite polynomials replaced by unity are also obtained. We also evaluate the action of the operators exp[aj(d/dx)j]\exp[a^j(d/dx)^j] on well-behaved functions and apply them to obtain other sums.Comment: LaTeX, 8 page

    The Schr\"odinger system H=-{1/2}e^{\Upsilon(t-t_o)}\partial_{xx} +\lfrac{1}{2}\omega^2e^{-\Upsilon(t-t_o)}x^2

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    In this paper, we attack the specific time-dependent Hamiltonian problem H=-{1/2}e^{\Upsilon(t-t_o)}\partial_{xx} +\lfrac{1}{2}\omega^2e^{-\Upsilon(t-t_o)}x^2. This corresponds to a time-dependent mass (TM) Schr\"odinger equation. We give the specific transformations to i) the more general quadratic (TQ) Schr\"odinger equation and to ii) a different time-dependent oscillator (TO) equation. For each Schr\"odinger system, we give the Lie algebra of space-time symmetries, the number states, the coherent states, the squeezed-states and the time-dependent , , (\Delta x)^2, (\Delta p)^2, and uncertainty product.Comment: Latex, 24 pages, including 3 figures and 8 tables. New title and format for journal. Conclusion adde
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