262 citations
- University of CoimbraPT8 papers
- Centre National de la Recherche ScientifiqueFR7 papers
- Universidade do Estado do Rio de JaneiroBR6 papers
- Universidade Federal do Rio Grande do SulBR4 papers
- Université de MontpellierFR4 papers
- Universidade de São PauloBR3 papers
- Florida Institute of TechnologyUS2 papers
- Gemini North ObservatoryUS2 papers
- Instituto Tecnológico de AeronáuticaBR2 papers
- Iowa State UniversityUS2 papers
- Jagiellonian UniversityPL2 papers
- Laboratoire de Physique ThéoriqueFR2 papers
20 papers
Perron-Frobenius operators and representations of the Cuntz-Krieger algebras for infinite matrices
Daniel Goncalves, Danilo Royer
In this paper we extend work of Kawamura, see kawamura, for Cuntz-Krieger algebras O_A for infinite matrices A. We generalize the definition of branching systems, prove their exist…
Enveloping Actions for Partial Hopf Actions
Marcelo Muniz S. Alves, Eliezer Batista
Motivated by partial group actions on unital algebras, in this article we extend many results obtained by Exel and Dokuchaev to the context of partial actions of Hopf algebras, acc…
Whole Earth Telescope observations of the hot helium atmosphere pulsating white dwarf EC 20058-5234
WET Collaboration, D. J. Sullivan, T. S. Metcalfe +22
We present the analysis of a total of 177h of high-quality optical time-series photometry of the helium atmosphere pulsating white dwarf (DBV) EC 20058-5234. The bulk of the observ…
Variational method study of the spin-1 Ising model with biaxial crystal-field anisotropy
J. Ricardo de Sousa, N. S. Branco
The phase diagram of the spin-1 Ising model in the presence of a biaxial crystal-field anisotropy is studied within the framework of a variational approach, based on the Bogolyubov…
The pulsation modes of the pre-white dwarf PG 1159-035
J. E. S. Costa, S. O. Kepler, D. E. Winget +74
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-0…
Reexamining the neutron skin thickness within a density dependent hadronic model
S. S. Avancini, J. R. Marinelli, D. P. Menezes +2
We calculate the skin thickness, binding energy, surface energy and density profiles within the Dirac solution of a density dependent hadronic model and compare with the NL3 parame…