2004/06/16 by Girish S. Setlur, Setlur, Girish S.
Physics and Astronomy · Earth and Planetary Sciences · #Physics of Superconductivity and Magnetism #High-pressure geophysics and materials #Quantum, superfluid, helium dynamics
paper · pdf · doi:10.48550/arxiv.cond-mat/0406367
Recently Tsai et.al. (cond-mat/0406174) have used the renormalization group approach to study strong coupling superconductors without assuming a broken symmetry phase. We use the hydrodynamic formulation to study the same problem with the same intention. We recast the electron-phonon + electron-electron problem in the hydrodynamic language and compute the one-particle electron Green function at finite temperature. From this we extract the dynamical density of states at finite temperature and look for sign of a gap.