Lecture 9: the Monogamy Paradox

Описание: ICTS course PHY-412.5 (January -- April 2021)
Instructor: Suvrat Raju

Course Reference: "Lessons from the Information Paradox" (https://arxiv.org/abs/2012.05770)

Lecture notes and assignments are available at the course website. (http://www.suvratraju.net/classes/bla...)

If the black hole horizon is smooth, degrees of freedom across the horizon must be entangled with each other. On the other hand, general results from quantum information imply that, for an old black hole, modes near the horizon must be entangled with the early radiation emitted by the black hole. This is a paradox because it violates the monogamy of entanglement.

The monogamy paradox was initially framed by Mathur using the von Neumann entropy. But, in this lecture we discussed a slightly more controlled version that be obtained using CHSH correlators.