Volume 77, Number 5, March 2007
|Number of page(s)||5|
|Published online||22 February 2007|
Monitoring approach to open quantum dynamics using scattering theory
Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universitat München - Theresienstraße 37, 80333 Munich, Germany
Accepted: 16 January 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.
PACS: 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
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