Renormalization-group approach to strong-coupled superconductors

  title={Renormalization-group approach to strong-coupled superconductors},
  author={S.-w. Tsai and A. H. Castro Neto and Ramamurti Shankar and David K Campbell},
We develop an asymptotically exact renormalization-group approach that treats electron-electron and electron-phonon interactions on an equal footing. The approach allows an unbiased study of the instabilities of Fermi liquids without the assumption of a broken symmetry. We apply our method to the problem of strongly coupled superconductors and find the temperature ${T}^{*}$ below which the high-temperature Fermi liquid state becomes unstable towards Cooper pairing. We show that ${T}^{*}$ is the… CONTINUE READING

Figures from this paper.


Publications referenced by this paper.