Linear matter density perturbations in the ${\Lambda }_{\mathrm{s}}$CDM model: Examining growth dynamics and addressing the $S_8$ tension

Özgür Akarsu, Arman Çam, Evangelos A. Paraskevas +1

We investigate linear matter density perturbations in the ${\Lambda }_{\mathrm{s}}$CDM, in which the $\Lambda$ is replaced by late-time ($z\sim 2$) mirror AdS-dS transition, resulting in distinct growt…