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The equilibrium short-time density matrix for a one-dimensional anharmonic oscillator

✍ Scribed by K.V. Ermakov; B.S. Butayev; V.P. Spiridonov

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
277 KB
Volume
138
Category
Article
ISSN
0009-2614

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✦ Synopsis

A simple closed formula is proposed for the short-time density matrix of a one-dimensional anharmonic oscihator in thermal equilibrium. The formula can be used in an iterative numerical calculation of the equilibrium density matrix at a given temperature starting from the density matrix at a higher temperature. It is shown that the proposed formula substantially reduces the number of iterations in the computation of thermally averaged physical quantities.

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