Cornell University
Effective immediately, all in-person, nonessential Cornell events must be postponed, cancelled or offered virtually at this time. More information.

This is a past event. Its details are archived for historical purposes.

The contact information may no longer be valid.

Please visit our current events listings to look for similar events by title, location, or venue.

LEPP Theory Seminar: Dalimil Mazac (Stony Brook)

Wednesday, February 20, 2019 at 2:00pm

Physical Sciences Building, 401
245 East Avenue

A crossing-symmetric OPE inversion formula

Abstract: I will discuss a new Lorentzian OPE inversion formula for the principal series of SL(2,R). Unlike the standard Lorentzian inversion formula in higher D, the new formula makes crossing symmetry manifest. In particular, inverting a single conformal block in the crossed channel returns the coefficient function of the crossing-symmetric sum of Witten exchange diagrams in AdS_2, including the direct-channel exchange. In this way, the inversion formula leads to a derivation of the Polyakov-Mellin bootstrap for SL(2,R). Furthermore, the formula directly gives rise to analytic extremal functionals which have appeared in recent literature, unifying them to a single object. Time allowing, I will explain how one can use the resulting functionals to study phi^4 theory in AdS_2 up to two loops, and prove universal properties of the spectrum at large scaling dimension.

Google Calendar iCal Outlook
Event Type





Contact E-Mail

Contact Name

Katerina Malysheva

Contact Phone



Dalimil Mazac

Speaker Affiliation

Stony Brook

Recent Activity