Princeton Plasma Physics Laboratory (PPPL) Colloquium

The holographic principle suggests that the laws of physics governing our universe can be explained by a simpler, equivalent theory defined on the edge of spacetime. However, its realizations in String Theory are associated with a type of universe that doesn't resemble ours. Recent advancements that leverage infrared physics have helped us apply this principle to spacetimes that look more like our own, giving us new symmetries that constrain the relevant laws of physics. Celestial Holography proposes that our universe can be understood as a projection on the night sky. This new approach involves an exciting collaboration of researchers from various subfields, from quantum field theory to mathematical physics and quantum gravity. This talk will explore how our age-old fascination with the night sky merges with cutting-edge advancements in our understanding of quantum gravity.