Error message

Notice: Undefined offset: 0 in include() (line 35 of /home/it/www/www-icts/sites/all/themes/riley/templates/views/views-view-fields--related-file-field-collection-view.tpl.php).
Rajesh Gopakumar (ICTS-TIFR, Bengaluru)
Date & Time
Wed, 06 January 2021, 15:00 to 16:30
Online Seminar

How exactly do large N QFTs reassemble themselves into perturbative string theories? This talk will focus on an example which explicitly illustrates a general program of how this can happen around a free field fixed point. Specifically, we consider n-point correlators in the symmetric product orbifold theory, dual to tensionless strings on AdS_3, in a Gross-Mende like limit of large conformal dimensions. These correlators are given in terms of branched covering maps which we can exactly solve for in this limit, via a map to a matrix model with a logarithmic potential. The spectral curve encoding the matrix model solution then naturally gives rise to an integral over the dual string moduli space through a special (Strebel) parameterization of the latter. This is a precise realisation of what was proposed as the underlying mechanism for gauge-string duality in weakly coupled QFTS. Finally, the integrand on the moduli space can be cast in a number of striking forms including an action given by (the modulus of) the Schwarzian of the covering map

Please register at (Links to join the seminars will be sent to your registered email address.)

Recordings of past talks can be found here: