6 papers
Thawing quintessence and transient cosmic acceleration in light of DESI
Rayff de Souza, Gabriel Rodrigues, Jailson Alcaniz
Recent analysis of the DESI Collaboration challenges the -Cold Dark Matter (CDM) model, suggesting evidence for a dynamic dark energy. These results are obtained in the con…
Cosmography with DESI DR2 and SN data
Gabriel Rodrigues, Rayff de Souza, Jailson Alcaniz
In this paper, we present a kinematic analysis of the Universe's expansion history using cosmography, with a particular emphasis on the jerk parameter , which is equal to one…
Thawing Dark Energy and Massive Neutrinos in Light of DESI
Gabriel Rodrigues, Rayff de Souza, Jamerson Rodrigues +1
Recent analyses have shown that a dynamic dark energy modeled by the CPL parameterization of the dark energy equation of state (EoS) can ease constraints on the total neutrino mass…
Stage IV CMB forecasts for warm inflation
F. B. M. dos Santos, G. Rodrigues, R. de Souza +1
We report forecast constraints on warm inflation in the light of future cosmic microwave background (CMB) surveys, with data expected to be available in the coming decade. These ob…
Dark Matter Freeze-In during Warm Inflation and the Seesaw Mechanism
Rayff de Souza, Jamerson G. Rodrigues, Clarissa Siqueira +2
A compelling way to address the inflationary period is via the warm inflation scenario, where the interaction of the inflaton field with other degrees of freedom affects its dynami…
A comparative analysis of dissipation coefficients in warm inflation
F. B. M. dos Santos, R. de Souza, J. S. Alcaniz
In the warm inflation scenario, the early cosmic acceleration is driven by the inflaton coupled to thermal fields, decaying into radiation and leaving a hot universe populated by r…