München 2006 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 11: Theorie

HK 11.4: Talk

Monday, March 20, 2006, 17:15–17:30, B

Plasminos in superconductors — •Barbara Betz and Dirk-H. Rischke — Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, D-60438 Frankfurt am Main, Germany

Hot and/or dense, normal-conducting systems of relativistic fermions exhibit a particular collective excitation, the so-called plasmino. We show that such excitations also exist in superconducting fermionic systems. We compute the dispersion relation and the spectral function for the particular case of fermions interacting via (attractive) scalar boson exchange.