 Department of Mathematics,
 University of Surrey,
 Guildford, GU2 7XH, United Kingdom.
Fields, Strings and Geometry Seminars
 These are the research seminars of the Fields, Strings and Geometry Group in the Department of Mathematics at the University of Surrey.
 Time and date:
Our regular seminar slot is 14:0015:00 or 16:0017:00 on Tuesdays during term.
 Venue:
39 AA 04.
 Open to:
Staff and PGR students.
 For further information, please see the
Fields, Strings and Geometry Group Seminars in the Department of Mathematics at the University of Surrey, or contact the organiser Andrea Prinsloo.
Upcoming Seminars
 14:0015:00 on Tuesday 4 September 2018
 Andrea Fontanella (University of Surrey)
 Black Horizons and Integrable Structures in String Theory
(link to event)

 This talk is an overview of my doctoral research, which focused on geometric aspects of black holes and integrable structures in string theory. The first part will be devoted to the study of symmetries of the horizon and its bulk extension. The horizon conjecture states that any horizon in any supergravity theory admits at least an sl(2,ℝ) isometry algebra. We shall consider the horizon conjecture beyond the supergravity approximation and show that standard global techniques, which are instrumental in the proof of the horizon conjecture, can no longer be applied. A sufficient condition to establish the horizon conjecture will be identified. As a consequence of our analysis, we find a nogo theorem for AdS_{2} backgrounds in heterotic theory. The bulk extension of a prescribed nearhorizon geometry will also be considered. The horizon fields will be expanded at first order in the radial coordinate and the space of first order radial deformations will be shown to be finite dimensional.
 In the second part, geometric aspects and spectral properties of integrable antide Sitter backgrounds will be discussed. We sketch our formulation of a Bethe ansatz in AdS_{2}×S^{2}×T^{6} type IIB superstring, which relies on the freefermion condition and overcomes the problem of the lack of a pseudovacuum state. In AdS_{3}×S^{3}×T^{6} type IIB superstring, we show that the Smatrix is annihilated by the boost generator of the qdeformed Poincaré superalgebra, and interpret this condition as a parallel equation for the Smatrix with respect to a connection on a fibre bundle. This suggests that the algebraic problem of finding the Smatrix can be geometrically rewritten, leading to a potential notion of a Universal Smatrix.
Past Seminars
 15:0016:00 on Wednesday 20 June 2018
 Oleg Smolyanov (Moscow State University)
 Hamiltonian method of the second quantization
 16:0017:00 on Tuesday 29 May 2018
 Christian Saemann (HeriotWatt University)
 Symmetries from Derived Brackets in Generalized Geometry and Beyond
 16:0017:00 on Tuesday 15 May 2018
 Jan Gutowski (University of Surrey)
 Highly Supersymmetric AdS Solutions
 16:0017:00 on Tuesday 24 April 2018
 Mario GarciaFernandez (Autonomous University of Madrid)
 Canonical metrics on holomorphic Courant algebroids
 16:0017:00 on Tuesday 6 March 2018
 MarcAntoine Fiset (University of Oxford)
 Heterotic G_{2} moduli and worldsheet BRST operator
 16:0017:00 on Tuesday 20 February 2018
 Silvia Penati (University of MilanoBicocca)
 ABJM theory: A Matrix Model for latitude Wilson loops
 16:0017:00 on Tuesday 13 February 2018
 Lorenzo Raspollini (University of Surrey)
 Perturbative Quantisation of Gauge Theories (Part 3)
 16:0017:00 on Tuesday 9 January 2018
 Benjo Fraser (Chulalongkorn University, Bangkok)
 Nonabelian Tduality and coset CFTs
 14:0015:00 on Friday 5 January 2018
 Jeff Murugan (University of Cape Town)
 A 2dimensional random supersymmetric model with disorder
 14:0015:00 on Tuesday 13 December 2017
 Renzo Ricca (University of MilanoBicocca)
 Quantifying topological complexity by knot polynomials
 16:0017:00 on Tuesday 5 December 2017
 Luca Cassia (University of MilanoBicocca)
 4D N=1,2,3,4 SCFTs on a Riemann Surface
 16:0017:00 on Tuesday 21 November 2017
 Lorenzo Raspollini (University of Surrey)
 Perturbative Quantisation of Gauge Theories (Part 2)
 16:0017:00 on Tuesday 14 November 2017
 Marius de Leeuw (Trinity College, Dublin)
 One and Twopoint functions in AdS/dCFT
 16:0017:00 on Tuesday 7 November 2017
 Lorenzo Raspollini (University of Surrey)
 Perturbative Quantisation of Gauge Theories (Part 1)
 14:0015:00 on Tuesday 31 October 2017
 Oleg Smolyanov (Moscow State University)
 Transformations of Feynman Path Integrals and Quantum Anomalies
 16:0017:00 on Tuesday 24 October 2017
 Alexander Schenkel (University of Nottingham)
 The stack of YangMills fields
 16:0017:00 on Tuesday 10 October 2017
 Pau Figueras (Queen Mary, University of London)
 Nonspherically symmetric collapse in asymptotically AdS spacetimes