"String Universality for Permutation Orbifolds," Alexandre Belin (Stanford University)

Tuesday, May 26, 2015 - 4:00pm to 5:00pm
TEP Seminars

TEP Seminar

Physics & Astronomy Building (PAB) Room 4-330
Tuesday, May 26, 2015
4-5 PM

Guest Speaker: Alexandre Belin (Stanford University)

Title: "String Universality for Permutation Orbifolds"


The hypothesis that every theory of quantum gravity in AdS_3 is a dimensional reduction of string/M-theory leads to a natural conjecture for the density of states of two dimensional CFTs with a large central charge limit. I will prove this conjecture for 2D CFTs which are orbifolds by permutation groups. In particular, I will characterize those permutation groups which give CFTs with well-defined large N limits and can thus serve as holographic duals to bulk gravity theories in AdS_3. I will then show that the holographic dual of a permutation orbifold will have a Hagedorn spectrum in the large N limit. This is evidence that, within this landscape, every theory of quantum gravity with a semi-classical limit is a string theory.

Event Attachments: 
PAB 4-330