Anharmonic quantum contribution to vibrational dephasing

Barik, Debashis ; Ray, Deb Shankar (2004) Anharmonic quantum contribution to vibrational dephasing The Journal of Chemical Physics, 121 (4). 1681_1-1681_9. ISSN 0021-9606

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Based on a quantum Langevin equation and its corresponding Hamiltonian within a c-number formalism we calculate the vibrational dephasing rate of a cubic oscillator. It is shown that leading order quantum correction due to anharmonicity of the potential makes a significant contribution to the rate and the frequency shift. We compare our theoretical estimates with those obtained from experiments for small diatomics N2, O2, and CO.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
Keywords:Spin Hamiltonians; Differential Equations; Perturbation Theory
ID Code:59115
Deposited On:03 Sep 2011 12:00
Last Modified:18 May 2016 09:48

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