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arXiv · 1810.10043

Pairfield Fluctuations of the 2D Hubbard Model

Thomas A. Maier·Douglas J. Scalapino
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Abstract

At temperatures above the superconducting transition temperature the pairfield susceptibility provides information on the nature of the pairfield fluctuations. Here we study the d-wave pairfield susceptibility of a 2D Hubbard model for dopings which have a pseudogap (PG) and for dopings which do not. One knows that in both cases there will be a region of Kosterlitz-Thouless fluctuations as the transition at $T_{KT}$ is approached. Above this region we find evidence for Emery-Kivelson phase fluctuations for dopings with a PG and Gaussian amplitude fluctuations for dopings without a PG.

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Thomas A. Maier, Douglas J. Scalapino. 2018-10-23. Pairfield Fluctuations of the 2D Hubbard Model. https://arxiv.org/abs/1810.10043

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