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Studying open quantum systems by means of a deterministic approach to approximate functional integration | | Vladimir D Rushai
; Yuri Yu Lobanov
; | | Date: |
31 May 2005 | | Journal: | Phys Rev E, 71 (6 Pt 2), 066708 | | Abstract: | Representation of propagator for open quantum systems in the form of a double functional integral with respect to conditional Wiener measure is proposed. It allows one to apply the approximate formulas exact for functional polynomials of a certain power to calculation of such integrals. Within this deterministic approach the problem is reduced to evaluation of usual (Riemann) integrals of low multiplicity. The formulas are in fact the basis of a numerical method of studying time evolution of the systems. The features of the method are discussed and some examples of calculations are given. | | Source: | PubMed, pmid16089912 | | Services: | Forum | Review | Favorites | |
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