| Full text | |
| Author(s): |
Trevisani, S. R. G.
;
Lima, J. A. S.
Total Authors: 2
|
| Document type: | Journal article |
| Source: | EUROPEAN PHYSICAL JOURNAL C; v. 83, n. 3, p. 17-pg., 2023-03-23. |
| Abstract | |
A macroscopic and kinetic relativistic description for a decoupled multi-fluid cosmology endowed with gravitationally induced particle production of all components is proposed. The temperature law for each decoupled particle species is also kinetically derived. The present approach points to the possibility of an exact (semi-classical) quantum gravitational kinetic treatment by incorporating back reaction effects for an arbitrary set of dominant decoupled components. As an illustration we show that a cosmology driven by creation of cold dark matter and baryons (without dark energy) evolves like ACDM. However, the complete physical emulation is broken when photon creation is added to the mixture thereby pointing to a crucial test in the future. The present analysis also open up a new window to investigate the Supernova-CMB tension on the values of H0, as well as the S8 tension since creation of all components changes slightly the CMB results and the expansion history both at early and late times. Finally, it is also argued that cross-correlations between CMB temperature maps and the Sunyaev-Zeldovich effect may provide a crucial and accurate test confronting extended CCDM and ACDM models. (AU) | |
| FAPESP's process: | 11/51676-9 - LLAMA: a mm/submm radiotelescope in the Andes, in collaboration with Argentina |
| Grantee: | Jacques Raymond Daniel Lépine |
| Support Opportunities: | Research Projects - Thematic Grants |