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How to consider electron-photon interaction w/o using self-energy?
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Hi, In negf, interactions are considered as self-energies. For electron-photon interaction, a perturbation Hamiltonian is derived and then self-energy is found using coupled-field theory. Now, my …
Sign of imaginary part of self-energy for hole Hamiltonian
Prof Datta in his QTAT Exercise Ch8, discusses that the imaginary part of the contact self-energy should be negative while the real part will tend towards zero for large energies in both directions. …
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