Banca de QUALIFICAÇÃO: ZILMAR CANDIDO DE SANTANA JUNIOR

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : ZILMAR CANDIDO DE SANTANA JUNIOR
DATE: 28/03/2025
TIME: 15:00
LOCAL: Plataforma Google Meet
TITLE:

Investigations into the Dark Sector of the Universe with Large-Scale Structure

KEY WORDS:

Interaction, Dark energy, Dark matter, Cosmological models, Gaussian processes regression, Bayesian inference.

PAGES: 50
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUMMARY:

Although the standard model of cosmology has extensive theoretical and observational support, it presents several
inconsistencies, with some observations being practically irreconcilable with theoretical predictions. Therefore, it is imperative
to seek modifications to the standard model in order to address these issues while maintaining its broad observational support.
In this work, we investigate, through two distinct approaches, a possible deviation in the evolution law of the dark matter
energy density, in which there is the possibility of non-gravitational interaction between the components of the dark sector. Our
results indicate a return to the standard model within 1σ to 2σ in all cases. However, the uncertainties are not precise enough to
rule out the hypothesis considered here. With the methodologies and methods applied in this study, combined with better
datasets, it will be possible to draw more enlightening conclusions.

 

COMMITTEE MEMBERS:
Externo à Instituição - FABIO CABRAL CARVALHO - UERN
Interno - 1674079 - LEO GOUVEA MEDEIROS
Presidente - 1672854 - RAIMUNDO SILVA JUNIOR