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Department of Mathematical Sciences

Seminars

This week's seminars

Maths HEP Lunchtime Seminars: NUTs and Bolts: free energy via susy localization

Presented by Chiara Toldo, Paris

7 December 2018 13:00 in CM101

The partition function of three-dimensional N=2 SCFTs on circle bundles of closed Riemann surfaces was recently computed via supersymmetric localization. In this talk I will describe supergravity solutions having as conformal boundary such circle bundle. These configurations are solutions to N=2 minimal gauged supergravity in 4d and pertain to the class of AdS-Taub-NUT and AdS-Taub-Bolt preserving 1/4 of the supersymmetries. I will discuss the conditions for the uplift of these solutions to M-theory and I provide the expression for the on-shell action of the Bolt solutions, computed via holographic renormalization. I will show that, when the uplift condition is satisfied, the Bolt free energy matches with the large N limit of the partition function of the corresponding dual field theory. I will finally comment on possible subtleties that arise in our framework when a given boundary geometry admits multiple bulk fillings.

Contact christiana.pantelidou@durham.ac.uk or mathew.r.bullimore@durham.ac.uk for more information

Research Seminars by Series

The research groups in the Department of Mathematical Sciences hold several seminar series in term time. Information on date, time and location are available here.

For information on previous years' seminars please see the seminar archives pages.