176 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of VictoriaCA27 papers
- Universidade de BrasíliaBR25 papers
- Universidade de São PauloBR24 papers
- University of AntwerpBE14 papers
- University of AlbertaCA12 papers
- Centro Brasileiro de Pesquisas FísicasBR11 papers
- Universidade Federal da ParaíbaBR10 papers
- Universidade Federal de Minas GeraisBR10 papers
- Centre National de la Recherche ScientifiqueFR8 papers
- Universidade Estadual de Campinas (UNICAMP)BR8 papers
- University of GeorgiaUS8 papers
- Instituto de Física de São CarlosBR7 papers
8 papers · 1 filter
Phase Diagram of the mixed spin-2 and spin-5/2 Ising system with two different single-ion anisotropies
J. S. da Cruz Filho, M. Godoy, A. S. de Arruda
In this paper we present a study of the effects of two different single-ion anisotropies in the phase diagram and in the compensation temperature of the mixed spin-2 and spin-5/2 I…
Exchange-spring behavior in bimagnetic CoFe2O4/CoFe2 nanocomposite
Gustavo C. P. Leite, Edson F. Chagas, Rodrigo Pereira +4
In this work we report a study of the magnetic behavior of ferrimagnetic oxide CoFe2O4 and ferrimagnetic oxide/ferromagnetic metal CoFe2O4/CoFe2 nanocomposites. The latter compound…
Study of the first-order phase transition in the classical and quantum random field Heisenberg model on a simple cubic lattice
Ricardo de Sousa, Douglas F. de Albuquerque, Alberto S. Arruda
The phase diagram of the Heisenberg ferromagnetic model in the presence of a magnetic random field (we have used bimodal distribution) of spin S=1/2 (quantum case) and …
Generalized AKNS System, Non-vanishing Boundary Conditions and N-Dark-Dark Solitons
A. de O. Assunção, H. Blas, M. J. B. F. da Silva
We consider certain boundary conditions supporting soliton solutions in the generalized non-linear Schrödinger equation (AKNS). Using the dressing transformation (DT) method and th…
Why the Entanglement of Formation is not generally monogamic
F. F. Fanchini, M. C. de Oliveira, L. K. Castelano +1
Differently from correlation of classical systems, entanglement of quantum systems cannot be distributed at will - if one system A is maximally entangled with another system B, it…
Monte Carlo simulations in a disordered binary Ising model
D. S. Cambuí, A. S. de Arruda, M. Godoy
In this work we study a disordered binary Ising model on the square lattice. The model system consists of two different particles with spin-1/2 and spin-1, which are randomly distr…
The aether-modified gravity and the Godel metric
C. Furtado, J. R. Nascimento, A. Yu. Petrov +1
We formulate the nonminimal aether-modified gravity whose action represents itself as a sum of the usual Einstein-Hilbert action and the CPT-even Lorentz-breaking aether-like gravi…
Horava-Lifshitz gravity and Godel Universe
C. Furtado, J. R. Nascimento, A. Yu. Petrov +1
We prove the consistency of the Gödel metric with the Horava-Lifshitz gravity whose action involves terms with z=1, z=2 and z=3. We show that, for different relations between the p…