Speaker
JOSE LUIS PALACIOS CORDOBA
(Universidad Del Valle)
Description
We investigate the cosmic effects of a Proca-type vector field coupled to cold dark matter (CDM). We compute the cosmological perturbations and the background evolution of the model by implementing it in the Boltzmann code CLASS. The interaction term was chosen as a $Qf(X)\rho_{cdm}$, where $Q$ is a coupling constant, $f(X)$ is a polynomial function of the vector field $A_{\mu}$, and $\rho_{\mathrm{cdm}}$ is the CDM energy density. Our code reproduced the previous result at background level showed in \textit{JCAP 12 (2019) 032} and the solution of matter power spectrum ($P_{k}$) and angular power spectrum $(C_{ll})$ described in \textit{JCAP 03 (2021) 032}. Additionally, we studied how the interaction affect the $P_{k}$ and $C_{ll}$.
Authors
CESAR ALONSO VALENZUELA TOLEDO
(Departamento de Física, Universidad del Valle)
JOSE LUIS PALACIOS CORDOBA
(Universidad Del Valle)
