Description |
Black holes, and other causal horizons e.g. de Sitter horizons in cosmology, obey laws of thermodynamics reminiscent of ordinary thermal systems. I will explain the definition and proof of the Generalized Second Law for causal horizons, and discuss its relationship to lower bounds on the stress-energy tensor in classical and quantum field theories. Lecture 2: What prevents negative energy from violating causality? |
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