Speaker
Description
In the current study we are demonstrating a bounce cosmology with generalized holographic cutoffs. The bounce realization arising from the application of holographic principle has been demonstrated with a modified gravity framework. Considering a multiplicative bouncing scale factor we have shown the four types of singularities. For this scale factor we have consider a scenario having holographic background evolution and derived a number of constraints depending upon the beheaviour of the equation of state parameter $w_\Lambda$. Accordingly we have carried out cosmographic analysis where the state finder trajectory has attained $\{r=1,s=0\}$ i.e. $\Lambda$CDM fixed point. This is attainable in the pre bounce ekpyrotic contraction scenario and in the post bounce expansion $s$ is going to $-\infty$ for finite $r$. In the next phase the holographic dark energy with generalized cut off is considered as the background fluid and the constraints obtained earlier are imposed to study the bounce realization of the same. The infrared cut off are reconstructed for the bounce realization and finally some specific viable models of $f(T)$ gravity are investigated for the bouncing scenario and the consequences of the UV correction are discussed. Adding simple correction to the particle and future event horizons due to the UV cutoff are used to obtain nonsingular bouncing solutions.
| Session | Astroparticle Physics and Cosmology |
|---|
