Phenomenology beyond the BCS theory
Seminars
SEMINAR ON LOW-ENERGY NUCLEAR PHYSICS
Date and Time: Tuesday, 16 May 2017, at 11:00 AM
Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: «Phenomenology beyond the BCS theory»
Speaker: D.V. Anghel (Department of Theoretical Physics, IFIN-HH, Romania)
Abstract:
Making a slight generalization of the BCS model, by allowing the chemical potential to take different values inside the attraction band, I show that the phenomenology can be dramatically enriched. This may lead to a discontinuous phase transition (the energy gap has a jump at the phase transition), two solutions for the energy gap equations, etc. I show both zero temperature [1] and finite temperature results [2].
[1] D. V. Anghel, arXiv:1609.07931.
[2] D. V. Anghel and G. A. Nemnes, Physica A 464, 74 (2016).