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Pseudogap Phenomena in the BCS Pairing Model

Satoshi Fujimoto
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Abstract

We investigate pseudo-gap phenomena realized in the BCS pairing model with a long but finite interaction range. We calculate the single-particle self-energy in all order exactly in the temperature range where the superconducting fluctuation propagator is Gaussian-like. It is found that vertex corrections to the self-energy which are discarded in the previous studies are crucially important for the pseudo-gap of the single-particle density of states in higher order calculations.

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Satoshi Fujimoto. 2002-03-12. Pseudogap Phenomena in the BCS Pairing Model. https://doi.org/10.1016/s0921-4534(02)02630-8

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