3 citations · 6 across the 5 of their papers we have counts for
6 papers
Specific heat and density anomaly in the Hubbard model
M. A. Habitzreuter, Willdauany C. de Freitas Silva, Eduardo O. Rizzatti +2
Understanding thermal properties of materials is fundamental to technological applications and to discovering new phenomena. In particular, advances in experimental techniques such…
Resistivity of the two-dimensional Bose-Hubbard model at weak coupling
Eduardo O. Rizzatti, Erich J. Mueller
We calculate the weak-coupling resistivity of the two-dimensional Bose Hubbard model, comparing with the more familiar fermionic case. At high temperature the resistivity is linear…
Waterlike density anomaly in fermions
Marco A. Habitzreuter, Eduardo O. Rizzatti, Marcia C. Barbosa
In this work we explore the one-dimensional extended Hubbard model as a fluid system modelling liquid phases of different densities. This model naturally displays two length scales…
Double-peak specific heat anomaly and correlations in the Bose-Hubbard model
Eduardo O. Rizzatti, Marco Aurélio A. Barbosa, Marcia C. Barbosa
Considering the thermodynamics of bosons in a lattice described by the Bose-Hubbard Hamiltonian, we report the occurrence of anomalous double peaks in their specific heat dependenc…
Quantum density anomaly in optically trapped ultracold gases
Eduardo O. Rizzatti, Marco Aurelio A. Barbosa, Marcia C. Barbosa
We show that the Bose-Hubbard Model exhibits an increase in density with temperature at fixed pressure in the regular fluid regime and in the superfluid phase. The anomaly at the B…
Waterlike anomalies on the Bose-Hubbard Model
Eduardo Osório Rizzatti, Márcio Sampaio Gomes Filho, Mariana Malard Sales +1
Although well-researched as a prototype Hamiltonian for strongly interacting quantum systems, the Bose-Hubbard model has not so far been explored as a fluid system with waterlike a…