177 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal do Rio Grande do NorteBR66 papers
- National ObservatoryBR29 papers
- KU LeuvenBE10 papers
- Universidade Federal de Juiz de ForaBR10 papers
- Universidade Federal Rural do Rio de JaneiroBR10 papers
- Valongo ObservatoryBR10 papers
- Universidade de São PauloBR9 papers
- Center for Astrophysics Harvard & SmithsonianUS7 papers
- University of BonnDE7 papers
- Centre National de la Recherche ScientifiqueFR6 papers
- Heidelberg UniversityDE6 papers
- Instituto Nacional de Pesquisas EspaciaisBR6 papers
6 papers · 1 filter
Conservative Force Fields in Non-Gaussian Statistics
J. M. Silva, R. Silva, J. A. S. Lima
In this letter, we determine the -distribution function for a gas in the presence of an external field of force described by a potential U(). In the case of a dilute ga…
Hybrid dark energy
J. S. Alcaniz, R. Silva, F. C. Carvalho +1
Extending previous results [Phys. Rev. Lett. 97, 081301 (2006)], we explore the cosmological implications of a new quintessence scenario driven by a slow rolling homogeneous scalar…
CMB and LSS constraints on a single-field model of inflation
F. C. Carvalho, J. S. Alcaniz, J. A. S. Lima +1
A new inflationary scenario whose exponential potential has a quadratic dependence on the field in addition to the standard linear term is confronted with the tree-year…
Scalar-field-dominated cosmology with a transient accelerating phase
F. C. Carvalho, J. S. Alcaniz, J. A. S. Lima +1
A new cosmological scenario driven by a slow rolling homogeneous scalar field whose exponential potential has a quadratic dependence on the field in addition to the stan…
Non-extensive statistics and the stellar polytrope index
R. Silva, J. S. Alcaniz
We use physical constrains imposed from the H-Theorem and from the negative nature of the heat capacity of self-gravitating thermodynamically isolated systems to investigate some p…
Negative heat capacity and non-extensive kinetic theory
R. Silva, J. S. Alcaniz
The negative nature of the heat capacity of thermodynamically isolated self-gravitating systems is rediscussed in the framework of a non-extensive kinetic theory. It is found…