The H0 tension: status of the observations and future perspectives
Gravitation and cosmology: cosmological perturbations and formation of structures ...
Search for dark light mediators with short-baseline detectors at Fermilab
| Full text | |
| Author(s): |
Alcaniz, J. S.
;
Neto, J. P.
;
Queiroz, F. S.
;
da Silva, D. R.
;
Silva, R.
Total Authors: 5
|
| Document type: | Journal article |
| Source: | SCIENTIFIC REPORTS; v. 12, n. 1, p. 9-pg., 2022-11-22. |
| Abstract | |
The Standard Cosmological Model has experienced tremendous success at reproducing observational data by assuming a universe dominated by a cosmological constant and dark matter in a flat geometry. However, several studies, based on local measurements, indicate that the universe is expanding too fast, in disagreement with the Cosmic Microwave Background. Taking into account combined data from CMB, Baryon Acoustic Oscillation, and type Ia Supernovae, we show that if the mechanism behind the production of dark matter particles has at least a small non-thermal origin, one can induce larger values of the Hubble rate H-0, within the Lambda CDM, to alleviate the trouble with H-0. In the presence of non-standard cosmology, however, we can fully reconcile CMB and local measurements and reach H-0 = 70-74 kms(-1) Mpc(-1). (AU) | |
| FAPESP's process: | 16/01343-7 - ICTP South American Institute for Fundamental Research: a regional center for theoretical physics |
| Grantee: | Nathan Jacob Berkovits |
| 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 |