Fermi-Wentzel Golden Rule

First-Order Fermi-Wentzel "Golden Rule"... 

This expresses the widely used El approximation to the Fermi-Wentzel golden rule. 

From Wentzel-Fermi Golden Rule to the Time Domain... 

The expression for the rate R (sec ) of photon absorption due to coupling V beriveen a molecule s electronic and nuclear charges and an electromagnetic field is given through first order in perturbation theory by the well known Wentzel Fermi golden rule formula (7,8) ... 

Let us now consider how similar the expression for rates of radiationless transitions induced by non Bom-Oppenheimer couplings can be made to the expressions given above for photon absorption rates. We begin with the corresponding (6,4g) Wentzel-Fermi golden rule expression given in Eq. (10) for the transition rate between electronic states Ti,f and corresponding vibration-rotation states Xi,f appropriate to the non BO case ... 

The simplest approach to estimate the probability of predissociation due to spin-orbit coupling is the use of the Fermi-Wentzel-Rice golden rule. The line width for radiationless transition from the bound state level Xv to a level of the continuum at energy e can be approximated by... 

For a proper interpretation of STM, it is essential to understand how the tunneling current works. Figure 7.1b shows a simple model of a tunneling junction consisting of a metal (tip)-vacuum-metal (surface) in which the tunnehng current can be derived bythe Fermi golden rule and Wentzel-Kramers-Brillouin (WKB) approximation. The tunneling current is then expressed by ... 

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