2 papers
cond-mat.supr-con1998
Vortex-pair unbinding in the normal state of two-dimensional, short coherence-length superconductors
Jan R. Engelbrecht, Alexander B. Nazarenko
We study the superconducting transition in the attractive Hubbard model in two dimensions using the self-consistent -matrix approximation. We demonstrate that for large system s…
cond-mat1994
Flat quasiparticle dispersion and a hidden small energy scale in the 2D t-J model
Elbio Dagotto, Alexander Nazarenko, Massimo Boninsegni
A model of weakly interacting hole quasiparticles is proposed to describe the normal state of the high temperature superconductors. The effect of strong correlations is contained i…