Finite temperature amplitudes and reaction rates in thermofield dynamics
Abdulla RakhimovPhysics Department, University of Alberta Edmonton, Alberta, Canada T6G2J1F. C. KhannaPhysics Department, University of Alberta Edmonton, Alberta, Canada T6G2J1
2001en
ABI
Abstract
We propose a method for calculating the reaction rates and transition amplitudes of generic processes taking place in a many-body system in equilibrium at temperature T. The relationship of the scattering and decay amplitudes as calculated in thermofield dynamics (TFD) to the conventional techniques is established. It is shown that in many cases the calculations are relatively easy in TFD.
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