CENTRA Seminar - Resurgent Transseries: Beyond (Large N) Perturbative Expansions - 5 dezembro 2013

Resurgent Transseries: Beyond (Large N) Perturbative Expansions

Ricardo Schiappa

IST, Lisbon

Abstract / Resumo 

In this talk I will review recent progress in generically defining perturbation theory even in non-Borel summable situations, by making use of resurgent analysis and transseries. As an example, I will address the large N perturbative expansion and discuss new nonperturbative contributions found deep in the large-order expansion of the genus expansion. If time allows, I will also briefly comment on the large N dual picture (via matrix models), where resurgence and transseries may also be used to obtain nonperturbative solutions of closed (topological) string theory.

Meeting room on the 2nd floor of the Physics Department building

Watch it live on:  http://www.ustream.tv/channel/centra---ist-seminars (also available on CENTRA TV webpage)
Talks' slides: http://centra.ist.utl.pt/~blackholes/seminars/schiappa.pdf

Recorder Seminar: TBA

CENTRA Seminars