Posted by admin | Posted in Green Energy | Posted on 25-06-2009
Tags: energy, environment, green, politics, sustainability
Green’s function (quantum)?
I’m desperate. Does anyone know how to calculate a Green’s function for a single impurity orbital? The problem hamiltonian consists of a free part for conduction electrons, free part for one impurity orbital and interaction between impurity state and free-electron state. The problem is very simple, with constant interaction energy. I’ve made all the contractions, just have no idea how to proceed with cross-terms between impurity and conduction electrons. I need advice on this or a link to a good book describing the effect. Please?
I cant write all the complicated signs so just click on these links. http://en.wikipedia.org/wiki/Green’s_function
http://www.ingentaconnect.com/content/tandf/tmph/1997/00000092/00000006/art00004
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