18 citations · 18 across the 3 of their papers we have counts for
6 papers
One and Two-Electron Spectral Function Line Shapes in the Vicinity of the Upper-Hubbard Bands Lower Limit
J. M. P. Carmelo, L. M. Martelo, P. D. Sacramento
In this paper we derive general expressions for few-electron spectral functions of the one-dimensional Hubbard model for values of the excitation energy in the vicinity of the $M^{…
Interplay of disorder and magnetic field in the superconducting vortex state
J. Lages, P. D. Sacramento, Z. Tesanovic
We calculate the density of states of an inhomogeneous superconductor in a magnetic field where the positions of vortices are distributed completely at random. We consider both the…
Quasiparticle density of states of d-wave superconductors in a disordered vortex lattice
J. Lages, P. D. Sacramento, Z. Tesanovic
We calculate the density of states of a disordered inhomogeneous d-wave superconductor in a magnetic field. The field-induced vortices are assumed to be pinned at random positions…
Spinor Description of a General Spin-J System
V. R. Vieira, P. D. Sacramento
We consider a spin coherent states description of a general quantum spin system. It is shown that it is possible to use the spin-1/2 representation to study the general spin-J case…
Optical absorption edge in one-dimensional conductors
J. M. P. Carmelo, P. D. Sacramento, N. M. R. Peres +1
The frequency-dependent conductivity is studied for both the one-dimensional Hubbard model and a model of spinless fermions, using a selection rule, the Bethe ansatz energy eigenst…
Landau Levels and Quasiparticle Spectrum of Extreme Type-II Superconductors
Zlatko Tesanovic, Pedro D. Sacramento
At high magnetic fields and low temperatures, numerous extreme type-II superconductors exhibit Landau quantization of electronic motion. We present an analytic construction of the…