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Unitary expansion of the time evolution operator

Mon, 2011-02-14 20:24 - Daniel Rudolph
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Date: 
2010-10-21
Author(s): 

N. Zagury, A. Aragão, J. Casanova, and E. Solano

Reference: 

Phys. Rev. A 82, 042110 (2010)

URL: 

http://link.aps.org/doi/10.1103/PhysRevA.82.042110

We propose an expansion of the unitary evolution operator, associated with a given Schrödinger equation, in terms of a finite product of explicit unitary operators. In this manner, this unitary expansion can be truncated at the desired level of approximation, as shown in the given examples.