| Full text | |
| Author(s): |
da Costa, Simony Santos
;
da Silva, Deivid R.
;
de Jesus, Alvaro S.
;
Pinto-Neto, Nelson
;
Queiroz, Farinaldo S.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | Journal of Cosmology and Astroparticle Physics; v. N/A, n. 4, p. 22-pg., 2024-04-01. |
| Abstract | |
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) | |
| FAPESP's process: | 18/25225-9 - São Paulo Research and Analysis Center |
| Grantee: | Sergio Ferraz Novaes |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 23/01197-4 - Closing in on Dark Matter at the LHC |
| Grantee: | Yoxara Sánchez Villamizar |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 21/01089-1 - Cherenkov Telescope Array: construction and first discoveries |
| Grantee: | Luiz Vitor de Souza Filho |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 21/14335-0 - ICTP South American Institute for Fundamental Research: a regional center for Theoretical Physics |
| Grantee: | Nathan Jacob Berkovits |
| Support Opportunities: | Special Projects |