Barik, Debashis ; Ray, Deb Shankar (2006) Quantum equilibrium factor in the decay of a metastable state at low temperature Journal of Statistical Mechanics: Theory and Experiment, 2006 . 06001. ISSN 1742-5468
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Official URL: http://iopscience.iop.org/1742-5468/2006/06/P06001
Related URL: http://dx.doi.org/10.1088/1742-5468/2006/06/P06001
Abstract
The Kramers factor is the key nonequilibrium contribution to the decay rate of a metastable state of a system in contact with a thermal bath. In the 1980s Wolynes introduced a quantum equilibrium correction to the overall rate. This is responsible for tunnelling and quantum enhancement of rate at low temperature. Based on a quantum formulation of a system-reservoir model and a Wigner canonical thermal distribution function for the harmonic oscillator bath we suggest a generalization of the quantum equilibrium factor and a consequent rate expression which are valid in the deep tunnelling region.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Institute of Physics. |
| Keywords: | Dynamical Processes (theory); Stochastic Processes (theory); Brownian Motion; Stochastic Particle Dynamics (theory) |
| ID Code: | 76812 |
| Deposited On: | 07 Jan 2012 06:14 |
| Last Modified: | 07 Jan 2012 06:14 |
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