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Session Q10 - HTSC: THEORY OF OBSERVATION OF ORDER PRAMETER SYMETRY
Mixed session, Friday morning, March 24, 8:00
Ballroom A4, San Jose Convention Center
A weak-coupling perturbation theory that includes lowest-order vertex corrections is constructed in the local approximation (which neglects the momentum dependence of the self-energy and employs ``momentum-averaged'' Green's functions). The approximate theory becomes exact in the limit of infinite dimensions, or in the limit where vertex corrections are neglected. A McMillan-Rowell tunneling inversion (constructed entirely on the imaginary axis with an exact analytic-continuation to the real axis) is presented for Pb along with a general discussion of the effects of vertex corrections on the properties of superconductors.