
Accession Number : AD0287935
Title : RELAXATION OF QUANTUM MECHANICAL SYSTEMS
Corporate Author : BRANDEIS UNIV WALTHAM MA
Personal Author(s) : MENGERT, PETER
Report Date : JUL 1962
Pagination or Media Count : 1
Abstract : A general theory of relaxation was developed. The equation for the timedevelopment of expectation values was shown to be equivalent to the density matrix equation of Bloch (except for a correction in sign of one term). Requirements for the validity of the equation are developed. The relaxation of a quantum oscillator is investigated in both the free and driven cases. An expression for the power absorbed when the oscillator is driven by an external field is given. Equations for multiple time correlation functions of relaxing system quantities are given and applied to a spin 1/2 system. An analysis is set up for the relaxation of an oscillator in a case where memory effects can be included. (Author)
Descriptors : *QUANTITATIVE ANALYSIS, *RELAXATION OSCILLATORS, CORRELATION TECHNIQUES, DENSITY, MATRICES(MATHEMATICS), SPINNING(MOTION).
Distribution Statement : APPROVED FOR PUBLIC RELEASE