ar X iv : c on d - m at / 9 40 10 05 v 2 1 0 Ja n 19 94 Composite operators for BCS Superconductor

ar X iv : c on d - m at / 9 40 10 66 v 1 2 8 Ja n 19 94 Ground state energy and quasiparticle gaps

ar X iv : c on d - m at / 9 30 90 14 v 1 1 3 Se p 19 93 LA - UR - 93 - 2992 Properties of Odd Gap Superconductors ∗

A new class of superconductors with the gap function odd under time reversal is considered. Some of the physical properties of these superconductors such as the Meissner effect, composite condensate, gapless spectrum and transition from the odd gap superconductor to the BCS state at lower temperatures are discussed.

ar X iv : c on d - m at / 9 40 10 12 v 2 1 2 Ja n 19 94 December 1993 Bosonization of current - current interactions

We discuss a generalization of the conventional bosonization procedure to the case of current-current interactions which get their natural representation in terms of current instead of fermion number density operators. A consistent bosonization procedure requires a geometrical quantization of the hamiltonian action of W ∞ on its coadjoint orbits. An integrable example of a nontrivial realizatio...

ar X iv : c on d - m at / 9 60 10 85 v 1 1 9 Ja n 19 96 Coherent Charge Transport in Superconductor – Normal Metal Proximity Structures

We develop a detailed analysis of electron transport in normal diffusive conductors in the presence of proximity induced superconducting correlation. We calculated the linear conductance of the system and the profile of the electric field. A rich structure of temperature dependences was found and explained. Our results are consistent with recent experimental findings.

ar X iv : c on d - m at / 9 41 10 47 v 1 1 2 N ov 1 99 4 CERN - TH . 7385 / 94 EFFECTIVE LAGRANGIANS FOR BCS SUPERCONDUCTORS AT

We show that the low frequency, long wavelength dynamics of the phase of the pair field for a BCS-type s-wave superconductor at T=0 is equivalent to that of a time-dependent non-linear Schrödinger Lagrangian (TDNLSL), when terms required by Galilean invariance are included. If the modulus of the pair field is also allowed to vary, the system is equivalent to two coupled TDNLSL’s. PACS#s:74.20.-...