Energy Change for Binding on First and Second Sites

Energy Change for Binding on First and Second Sites 

We define the energy changes for the processes described in (3.3.37) and (3.3.43), i.e., the process of bringing G from a fixed position in the vacuum onto a specific empty site. For the first site this is 

Some care must be exercised in the interpretation of the various averages in (3.3.78). In (3.3.52) we had an average of the form 

In this case Ua is the binding energy on the subunit that is occupied. This is different from the average 

The energy change for the second site is obtained from (3.3.44). 

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