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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 23, Number 12
BKCSDE 23(12)
December 20, 2002

Title	Exactly Solvable Time-Dependent Problems: Potentials of Monotonously Decreasing Function of Time
Author	Tae Jun Park
Keywords	Time-dependent, Eckart, Barrier
Abstract	We solve the Schrodinger equation analytically for systems whose potentials have a certain time-dependence (which is monotonously decreasing) and general coordinate-dependences. Only a few time-dependent systems have been reported to be analytically solved whose potentials are constant, linear, and quadratic functions of coordinate with arbitrary time-dependences. From a different perspective, we focus on the time-dependent systems whose potentials are monotonously decreasing functions of time with arbitrary coordinate-dependences. Time-dependent potential of any coordinate-dependence can be handled analytically by transforming it to a time-independent potential of known solutions if its time-dependence is monotonously decreasing. We do this by a unitary transformation of the wavefunction and variable transformations to change the Schrodinger equation to be time-independent in new variables. These variables are then determined by solving a set of simple differential equations. This way we are able to find and to obtain analytical solutions for time-dependent potentials which we mention above.
Page	1733 - 1736
Full Text	PDF

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