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Decoherence effects in case of molecular rotations in solids |
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| Authors: | J. Peternelj T. Kranjc |
| Affiliation: | a Faculty of Civil and Geodetic Engineering, University of Ljubljana, 100 Ljubljana, Jamova 2, Slovenia b Institute J. Stefan, University of Ljubljana, Ljubljana, Slovenia c Department of Physics, University of Ljubljana, Ljubljana, Slovenia, 1000 Ljubljana, Jadranska 19, Slovenia |
| Abstract: | A single XH3 group interacting with an ensemble of lattice oscillators is considered using the Feynman-Vernon formalism. It is shown that the influence functional depends explicitly on the difference between winding numbers of the paths contributing to the path-integral expression for the reduced density matrix. However, the resulting interference is suppressed due to the presence of the Debye-Waller factor in the influence functional. The meaning of this result in connection with the topology of the XH3 rotation angle is also discussed. Finally, the emergence of a gauge-like potential term describing one aspect of the XH3-lattice interaction is indicated. |
| Keywords: | Decoherence effects Molecular rotations Feynman-Vernon formalism Debye-Waller factor Tunneling XH3 group |
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