| Texto completo | |
| Autor(es): |
da Costa, Simony Santos
;
da Silva, Deivid R.
;
de Jesus, Alvaro S.
;
Pinto-Neto, Nelson
;
Queiroz, Farinaldo S.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 4, p. 22-pg., 2024-04-01. |
| Resumo | |
We have witnessed different values of the Hubble constant being found in the literature in the past years. Albeit, early measurements often result in an H-0 much smaller than those from late-time ones, producing a statistically significant discrepancy, and giving rise to the so-called Hubble tension. The trouble with the Hubble constant is often treated as a cosmological problem. However, the Hubble constant can be a laboratory to probe cosmology and particle physics models. In our work, we will investigate if the possibility of explaining the H-0 trouble using non-thermal dark matter production aided by phantom-like cosmology is consistent with the Cosmic Background Radiation (CMB) and Baryon Acoustic Oscillation (BAO) data. We performed a full Monte Carlo simulation using CMB and BAO datasets keeping the cosmological parameters Omega(b)h(2), Omega(c)h(2), 100 theta, tau(opt), and w as priors and concluded that a non-thermal dark matter production aided by phantom-like cosmology yields at most H-0 = 70.5 km s(-1) Mpc(-1) which is consistent with some late-time measurements. However, if H-0 > 72 km s(-1) Mpc(-1) as many late-time observations indicate, an alternative solution to the Hubble trouble is needed. Lastly, we limited the fraction of relativistic dark matter at the matter-radiation equality to be at most 1%. (AU) | |
| Processo FAPESP: | 18/25225-9 - Centro de Pesquisa e Análise de São Paulo |
| Beneficiário: | Sergio Ferraz Novaes |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 23/01197-4 - Focando em matéria escura no LHC. |
| Beneficiário: | Yoxara Sánchez Villamizar |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 21/01089-1 - Cherenkov Telescope Array: construção e primeiras descobertas |
| Beneficiário: | Luiz Vitor de Souza Filho |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |
| Processo FAPESP: | 21/14335-0 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para Física Teórica |
| Beneficiário: | Nathan Jacob Berkovits |
| Modalidade de apoio: | Auxílio à Pesquisa - Projetos Especiais |