118 citations · 166 across the 6 of their papers we have counts for
6 papers
Superfluid weight and polarization amplitude in the one-dimensional bosonic Hubbard model
B. Hetényi, L. M. Martelo, B. Tanatar
We calculate the superfluid weight and the polarization amplitude for the one-dimensional bosonic Hubbard model focusing on the strong-coupling regime. Other than analytic calculat…
Variational Monte Carlo method for the Baeriswyl wavefunction: application to the one-dimensional bosonic Hubbard model
B. Hetényi, B. Tanatar, L. M. Martelo
A variational Monte Carlo method for bosonic lattice models is introduced. The method is based on the Baeriswyl projected wavefunction. The Baeriswyl wavefunction consists of a kin…
One-Electron Singular Branch Lines of the Hubbard Chain
J. M. P. Carmelo, K. Penc, L. M. Martelo +5
The momentum and energy dependence of the weight distribution in the vicinity of the one-electron spectral-function singular branch lines of the 1D Hubbard model is studied for all…
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^{…
Electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ
M. Sing, U. Schwingenschlögl, R. Claessen +6
We study the electronic structure of the quasi-one-dimensional organic conductor TTF-TCNQ by means of density-functional band theory, Hubbard model calculations, and angle-resolved…
Magnetic Properties of Weakly Doped Antiferromagnets
I. R. Pimentel, F. Carvalho Dias, L. M. Martelo +1
We study the spin excitations and the transverse susceptibility of a two-dimensional antiferromagnet doped with a small concentration of holes in the t-J model. The motion of holes…