296 citations · 6.5k across the 170 of their papers we have counts for
8 papers · 1 filter
Transient cosmic acceleration
J. S. Alcaniz
We explore cosmological consequences of two quintessence models in which the current cosmic acceleration is a transient phenomenon. We argue that one of them (in which the EoS para…
Constraining dark matter-dark energy interaction with gas mass fraction in galaxy clusters
R. S. Goncalves, J. S. Alcaniz, A. Dev +1
The recent observational evidence for the current cosmic acceleration have stimulated renewed interest in alternative cosmologies, such as scenarios with interaction in the dark se…
Cosmological consequences of a possible -dark matter interaction
F. E. M. Costa, J. S. Alcaniz
We propose a general class of interacting models in which the interaction between the CDM component and is parameterized by an arbitrary function of the cosmic scale factor $ε(…
Nonextensive Quantum H-Theorem
R. Silva, D. H. A. L. Anselmo, J. S. Alcaniz
A proof of the quantum -theorem taking into account nonextensive effects on the quantum entropy is shown. The positiveness of the time variation of combined with…
Nonextensive effects on the phase structure of QHD
F. I. M. Pereira, R. Silva, J. S. Alcaniz
We investigate nonextensive effects on phase transition in nuclear matter in the context Walecka many-body field theory. Changes in the general behavior are observed when the resul…
A generalized equation of state for dark energy
E. M. Barboza, J. S. Alcaniz, Zong-Hong Zhu +1
A generalized parameterization for the dark energy equation of state (EoS) is proposed and some of its cosmological consequences are investigated. We show that in the limi…