Abstract
In current Cosmology, the flat LCDM model has obtained a considerable success in reconciling observations of different natures, like cosmic expansion acceleration (as suggested from Supernova Ia observations), the Cosmic Microwave Background Power Spectrum, Structure Formation, Matter Power Spectrum, Baryon Acoustic Oscillations, and Total Age of Universe. However, such model suffers from some observational problems, like ages of old objects at high redshifts, predicted quantity of satellite galaxies and, mainly, two big theoretical problems, namely, the Cosmological Constant Problem and the Cosmic Coincidence Problem. Such problems have stimulated cosmologists and astronomers to propose alternative scenarios to the cosmic concordance model (LCDM).In this project we will perform a comparative study (of statistical character) among LCDM and the various alternative cosmologies existing in literature. We intend to compare the alternative cosmologies (XCDM, Scalar fields, Spinorial fields, Matter creation models etc.) not only by the light of the so called background observational tests, but also with tests involving higher orders of density perturbations. (AU)
Scientific publications
(11)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
PEREIRA, S. H.;
LIMA, R. DE C.;
ALVES, M. E. S.;
GUIMARAES, T. M.;
JESUS, J. F.;
SOUZA, A. P. S.
Cosmology with mass dimension one fields: recent developments.
European Physical Journal-Special Topics,
v. 229,
n. 11, SI,
p. 2079-2116,
SEP 2020.
Web of Science Citations: 1.
JESUS, J. F.;
GREGORIO, T. M.;
ANDRADE-OLIVEIRA, F.;
VALENTIM, R.;
MATOS, C. A. O.
Bayesian correction of H(z) data uncertainties.
Monthly Notices of the Royal Astronomical Society,
v. 477,
n. 3,
p. 2867-2873,
JUL 2018.
Web of Science Citations: 5.
JESUS, J. F.;
VALENTIM, R.;
ANDRADE-OLIVERA, F.
Bayesian analysis of CCDM models.
Journal of Cosmology and Astroparticle Physics,
n. 9
SEP 2017.
Web of Science Citations: 1.