Black Holes, Quantum Mechanics and the Reversibility of Time by Suvrat Raju

Explore the fascinating intersection of black holes, quantum mechanics, and the reversibility of time in this comprehensive 2-hour lecture by theoretical physicist Suvrat Raju. Delve into the enigmatic nature of black holes, their theoretical prediction, and observational confirmation. Examine the successful application of quantum mechanics to atomic systems and its potential implications for all physical phenomena. Investigate the paradoxes that arise when applying quantum principles to black holes, particularly the "information paradox" and its relationship to the nature of time. Journey through key concepts such as projectile motion, escape velocity, Newtonian gravity, general relativity, and the fabric of spacetime. Uncover the intricacies of Hawking radiation, black hole evaporation, and the holography of information. Gain insights into energy eigenstates in quantum mechanics, gravitational tails, and the challenges of localization in gravity. Conclude with a thought-provoking Q&A session that further explores these complex topics.

When: 4:00 pm to pm Saturday, 14 January 2023
Introduction
Black Holes, Quantum Mechanics and the Reversibility of Time
Projectile motion
Projectile motion: scales
Projectile motion: reversibility
Reversibility
Escape velocity
Newtonian gravity
Scope of Newtonian gravity
Nonlocality in Newtonian gravity
The fabric of spacetime
Locality in general relativity
A black hole
Theorists and black holes!
Datt-Oppenheimer-Snyder collapse
Penrose diagrams
Journey through physics
Schrodinger's cat
Superpositions
Entanglement
Consequences of entanglement
Fluctuations of spacetime
Pair creation
Hawking radiation
Spectrum of Hawking radiation
Black-hole evaporation
Lifetime!
The life of a dead star
Information paradox
Reversibility of time evolution
Solution: delicate correlations
Formation of correlations?
Holography of information
Recovery of information
Energy Eigenstates in Quantum Mechanics
Localization via superposition
Energy in Gravity
Gravitational tails
Failure of localization in gravity
No split states in gravity
Errors in Hawking's argument
Thank You
Q&A