TITLE

Quantum mechanical thermal rate constants using flux–flux correlation functions and Padé analytical continuation procedures

AUTHOR(S)
Lefebvre, Roland; Ryaboy, Victor; Moiseyev, Nimrod
PUB. DATE
June 1993
SOURCE
Journal of Chemical Physics;6/1/1993, Vol. 98 Issue 11, p8601
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new expression for a thermal reaction rate is derived. It is based on the flux–flux correlation function approach and a finite basis set representation but differs from the Miller–Schwartz–Tromp (MST) formulation [J. Chem. Phys. 79, 4889 (1983)] by substitution of time dependent sine functions by parameter dependent Lorentzians. Then we apply Padé extrapolation procedure to eliminate the parameter. This operation replaces the search for stability of the time dependent rate in the MST approach. The convergence of the method is checked on the one dimensional Eckart barrier as an illustrative example.
ACCESSION #
7617357

 

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