The equation of motion of a quantumhyphen;mechanical twohyphen;particle system is solved without approximation in an expansion in Planck's constant. Firsthyphen;order quantum corrections comprising all contributions to the coefficient ofplanck;2in the expansion are derived for the differential scattering cross section and the kinetichyphen;theory transport coefficients. Numerical results are obtained for a simple model of molecular interactions, and lack of agreement is found with work based on the WKB solution of the Schrouml;dinger equation.
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