Abstract: In the past few years, holography has served as a powerful tool in describing strong gravitational phenomena. Recently, several works have started to apply these tools to Big Bang-Big Crunch cosmologies. In this talk, I will describe the explicit construction of holographic 4D braneworld cosmologies and 4D eternally traversable wormholes by embedding End of the World (ETW) branes in 5D … Read More

Abstract: Classically, the volume of the Einstein-Rosen bridge of the two-sided black hole grows linearly in time. Such linear increase is in conflict with the finite black hole entropy S, thus at late time, the volume should be upper-bounded and saturate at the time scale O(e^S). The bulk mechanism of such saturation is due to the production of baby universes … Read More