2006/09/30 by Barbara Betz, Dirk H. Rischke
Physics and Astronomy · #Boson #Condensed matter physics #Dispersion (optics) #Dispersion relation #Energy exchange #Excitation #Fermion #Physics #Physics of Superconductivity and Magnetism #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Quantum, superfluid, helium dynamics #Superconductivity #Theoretical physics #cond-mat.supr-con #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.75.065022
published as Phys.Rev.D75:065022,2007 · 15 pages, 14 figures, revtex
openalex publication_date 2007/03/22 · arxiv created 2007/03/28 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.