Alleviating the Hubble Tension Using Coupled Dark Energy - Dark Matter Interaction
The study investigates a dark matter-dark energy interaction model ($\Lambda$sCDM) to resolve the Hubble tension between early and late-universe measurements. The model modifies late-time expansion history by coupling dark matter and dark energy, successfully reducing the tension from 5$\\sigma$ to 1.2$\\sigma$. This resolution is driven by dark sector interaction during the dark energy-dominated era.