Speaker
Description
The late-time accelerated expansion of the universe remains a profound mystery, traditionally attributed to a cosmological constant or dark energy component. However, mounting observational tensions like Hubble tension have challenged the adequacy of the standard ÎCDM model and motivated alternative approaches. This study explores entropic dark energy models, which emerge from the thermodynamic interpretation of gravity and the holographic principle, offering a novel framework for cosmic acceleration rooted in fundamental physics. By incorporating generalized entropy-area relations and horizon thermodynamics, modified Friedmann equations are formulate which naturally give rise to an effective dark energy component. The cosmological dynamics of these entropic models are studied, focusing on their implications for the Hubble tension and other late-time anomalies such as the growth rate discrepancy. The results show that entropic dark energy models can mimic standard cosmology at early times while allowing for dynamical deviations at low redshifts, potentially easing existing tensions and thus provide deeper insights into the nature of dark energy and the underlying laws governing cosmic evolution.
