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Phys. Rev. A 61, 052715 (2000) [7 pages]

Quantum approach to rotation-state relaxation theory

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V. L. Vaks
Institute for Physics of Microstructures, Russian Academy of Science, Nizhny Novgorod GSP-105, Russia

V. V. Mityugov
Institute of Applied Physics, Russian Academy of Science, Nizhny Novgorod GSP-120, Russia

Received 2 August 1999; published 14 April 2000

The principles of the quantum theory of open systems are used to calculate the collisional relaxation parameters of the ground rotational transition for a dipole molecule. The conditions for a microwave-field saturation of the rotational transition are specified taking into account degeneracy of the excited state. A simple quantum model is used to illustrate the idea of rigorous substantiation of the second law of thermodynamics.

© 2000 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevA.61.052715
DOI:
10.1103/PhysRevA.61.052715
PACS:
34.10.+x, 05.30.-d, 05.70.Ln, 42.50.Ct
 
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