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Quasiparticle dispersion of the t-J and Hubbard models
A. Moreo, S. Haas, A. Sandvik +1
The spectral weight of the two dimensional and Hubbard models has been calculated using exact diagonalization and quantum Monte Carlo techniques, a…
Shadow Bands in the Cuprates
Stephan Haas, Adriana Moreo, Elbio Dagotto
A consequence of strong antiferromagnetic correlations in models of high-Tc cuprates is the appearance in photoemission (PES) calculations of considerable more weight above the Fer…
Antiferromagnetic and van Hove Scenarios for the Cuprates: Taking the Best of Both Worlds
Elbio Dagotto, Alexander Nazarenko, Adriana Moreo
A theory for the high temperature superconductors is proposed. Holes are spin-1/2, charge e, quasiparticles strongly dressed by spin fluctuations. Based on their dispersion, it is…
Hole Pockets in the Doped 2D Hubbard Model
Adriana Moreo, Daniel Duffy
The electronic momentum distribution of the two dimensional Hubbard model is studied for different values of the coupling , electronic density ${\rm \…
Is there spin-charge separation in the 2D Hubbard and t-J models at low electronic densities?
Y. C. Chen, A. Moreo, F. Ortolani +2
The spin and density correlation functions of the two-dimensional Hubbard model at low electronic density are calculated in the ground state by using the power method, and at…