201 citations · 793 across the 15 of their papers we have counts for
15 papers
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…
Pseudogap above Tc in a model with d_{x^2-y^2} pairing
Jan R. Engelbrecht, Alexander Nazarenko, Mohit Randeria +1
We study the anomalous normal state properties of a simple two-dimensional model whose ground state is a d-wave superconductor. Using a self-consistent, conserving formulation, we…
Hole Doping Evolution of the Quasiparticle Band in Models of Strongly Correlated Electrons for the High-T_c Cuprates
Daniel Duffy, Alexander Nazarenko, Stephan Haas +3
Quantum Monte Carlo (QMC) and Maximum Entropy (ME) techniques are used to study the spectral function of the one band Hubbard model in strong coupling including a ne…
One particle spectral weight of the three dimensional single band Hubbard model
M. Ulmke, R. T. Scalettar, A. Nazarenko +1
Dynamic properties of the three-dimensional single-band Hubbard model are studied using Quantum Monte Carlo combined with the maximum entropy technique. At half-filling, there is a…
Hole Dispersion and Symmetry of the Superconducting Order Parameter for Underdoped CuO Bilayers and 3D Antiferromagnets
Alexander Nazarenko, Elbio Dagotto
We calculate the dispersion of a hole in bilayers and 3D antiferromagnets, using the self-consistent Born approximation (SCBA) to the model. Superconductivity a…
Influence of Hole Doping on Antiferromagnetic Real-Space Approaches for the High-Tc Cuprates
Alexander Nazarenko, Stephan Haas, Jose Riera +2
Recently proposed scenarios for the cuprates make extensive use of a ``flat'' quasiparticle (q.p.) dispersion and short-range hole-hole interactions in real-space, both caused by a…