Monitoring approach to open quantum dynamics using scattering theoryK. Hornberger
Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universitat München - Theresienstraße 37, 80333 Munich, Germany
received 11 December 2006; accepted in final form 16 January 2007; published March 2007
published online 22 February 2007
It is shown how S-matrix theory and the concept of continuous quantum measurements can be combined to yield Markovian master equations which describe the environmental interaction non-perturbatively. The method is then applied to obtain the master equation for the effects of a gas on the internal dynamics of an immobile complex quantum system, such as a trapped molecule, in terms of the exact multi-channel scattering amplitudes.
03.65.Yz - Decoherence; open systems; quantum statistical methods.
03.65.Nk - Scattering theory.
34.10.+x - General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.).
© Europhysics Letters Association 2007