Speaker
Yuejia Zhai
(University of Sheffield)
Description
We focused on a phenomenological interacting dark energy model (IDE) with energy-momentum transfer from dark matter to dark energy through a coupling $Q=\xi\mathcal{H}\rho_{DE}$. Following our previous work on constraining the parameters of the same IDE model using CMB and DESI data, we now present the N-body simulation results based on a modified version of RAMSES code. Compared with the fiducial LCDM results, the IDE model predicts an enhanced power on large scales but suppressed clustering on small scales (k ≥ 2 h/Mpc), consistent with the reduced dark matter density at late times.
| Other topic / keywords: | Tensions in cosmology |
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Authors
Yuejia Zhai
(University of Sheffield)
Baojiu Li
(Institute for Computational Cosmology, Durham University, UK)
Prof.
Rafael Nunes
(Rio Grande do Sul U)
Eleonora Di Valentino
(University of Sheffield)
Carsten van de Bruck
(University of Sheffield)