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Black holes and Hawking radiation in spacetime and its analogues
Ted Jacobson
These notes introduce the fundamentals of black hole geometry, the thermality of the vacuum, and the Hawking effect, in spacetime and its analogues. Stimulated emission of Hawking…
Boundary unitarity and the black hole information paradox
Ted Jacobson
Both AdS/CFT duality and more general reasoning from quantum gravity point to a rich collection of boundary observables that always evolve unitarily. The physical quantum gravity s…
Black hole entanglement entropy and the renormalization group
Ted Jacobson, Alejandro Satz
We investigate the contributions of quantum fields to black hole entropy by using a cutoff scale at which the theory is described with a Wilsonian effective action. For both free a…
Gravitation and vacuum entanglement entropy
Ted Jacobson
The vacuum of quantum fields contains correlated fluctuations. When restricted to one side of a surface these have a huge entropy of entanglement that scales with the surface area.…
Horizon entropy and higher curvature equations of state
Raf Guedens, Ted Jacobson, Sudipta Sarkar
The Clausius relation between entropy change and heat flux has previously been used to derive Einstein's field equations as an equation of state. In that derivation the entropy is…