Analogue Gravity: Lessons from Emergent Phenomena

This lecture by Stefano Liberati from SISSA covers three small lessons from analogue gravity. It delves into the intriguing features of general relativity, such as singularities and critical phenomena in gravitational collapse, and explores the concept of emergent gravity where spacetime is considered a collective variable. The lecture also discusses analogue models of gravity, including acoustic gravity and Bose-Einstein condensates, shedding light on the emergent spacetime and the robustness of Hawking radiation. Furthermore, it touches upon the cosmological constant problem in emergent gravity and the implications of relativistic Bose-Einstein condensates in understanding emergent Newtonian gravity. The lecture concludes by highlighting the potential of analogue gravity models in providing insights into the interface between gravity and particle physics.