Cumulant Methods and Short Time Propagators

Authors

Rob D. Coalson
David L. Freeman, University of Rhode IslandFollow
Jimmie D. Doll

Document Type

Article

Date of Original Version

1989

Department

Chemistry

Abstract

The present paper clarifies a number of issues concerning the general problem of constructing improved short time quantum mechanical propagators. Cumulant methods are shown to be a particularly convenient tool for this task. Numerical results comparing methods based on partial averaging and on gradient approaches are presented for simple model problems and for many particle quantum fluids.

Citation/Publisher Attribution

Coalson, R. D., Freeman, D. L., & Doll, J. D. (1989). Cumulant Methods and Short Time Propagators. Journal of Chemical Physics, 91(7), 4242-4248. doi: 10.1063/1.456803

Available at: http://dx.doi.org/10.1063/1.456803

Publisher Statement

© 1989 American Institute of Physics.