Are there plasminos in superconductors?
classification
⚛️ nucl-th
cond-mat.supr-conhep-ph
keywords
fermionsplasminossuperconductorsattractivebosoncollectivecomputedense
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Hot and/or dense, normal-conducting systems of relativistic fermions exhibit a particular collective excitation, the so-called plasmino. We compute the one-loop self-energy, the dispersion relation and the spectral density for fermions interacting via attractive boson exchange. It is shown that plasminos also exist in superconductors.
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