Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series APC-TH
Subjects hep-th
Date Tuesday 11 September 2018
Time 14:00
Institute APC
Seminar Room 646 A - Mondrian
Speaker's Last Name Olea
Speaker's First Name Rodrigo
Speaker's Email Address
Speaker's Institution Universidad Nacional Andres Bello, Santiago Chili
Title CFT Entanglement Entropy and Topological Terms in Gravity
Abstract In 2006, Ryu and Takayanagi provided a general recipe on how to compute entanglement entropy of a Conformal Field Theory using gauge/gravity duality. This holographic prescription, which considers the extension of the entangling region from the boundary into an Einstein space bulk, has produced remarkable insight on general properties of strongly correlated systems. However, this progress has been made on a rather case-by-case basis, as it requires proper renormalization of the gravity action in the bulk. In this talk, we introduce a more geometric approach to deal with the above problem. By the addition of topological terms to the gravity action, we renormalize the holographic entanglement entropy and relate holographic properties of CFTs to a topological number (Euler characteristic).
arXiv Preprint Number

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