Are there plasminos in superconductors?
arXiv:nucl-th/0609019 · doi:10.1103/PhysRevD.75.065022
Abstract
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.
15 pages, 14 figures, revtex