Forthcoming events in this series
Constraining F-theory GUTs
Abstract
The Large Hadron Collider – the story so far
Abstract
Generalised Space-Time and Duality
Abstract
New three-generation models from the heterotic standard embedding
Abstract
Recently, two new Calabi-Yau threefolds have been discovered which have small Hodge numbers, and give rise to three chiral generations of fermions via the so-called 'standard embedding' compactification of the heterotic string.
In this talk I will describe how to deform the standard embedding on these manifolds in order to achieve the correct gauge group. I will also describe how to calculate the resulting spectrum and interactions, which is still work in progress.
On the gravity duals of N=2 superconformal field theories
Abstract
The torsional conifold: fivebranes and the Klebanov-Strassler theory
Abstract
Stringy corrections to the Kahler potential, SUSY breaking and the stabilization of (all) Kahler moduli
String Theory and Many-Body Physics
Abstract
Aspects of heterotic Calabi-Yau compactifications
Abstract
Crystal Melting and Wall Crossing for Donaldson-Thomas Invariants
Abstract
On Fields over Fields
Abstract
Generalized scaling and integrability from AdS5 x S5
Abstract
N=2 Superconformal Theories and M5 branes
Abstract
Holographic Superconductors in M-Theory
Abstract
Twistor-Strings, Grassmannians and Leading Singularities
Abstract
Scanning through Heterotic Vacua
Abstract
T-Duality Invariant String Theory at the Quantum Level
Abstract
In this talk I will be discussing some reformulations of string theory which promote T-duality to the level of a manifest symmetry namely Hull's Doubled Formalism and Klimcik and Severa's Poisson-Lie T-duality. Such formalisms double the number of fields but also incorporate some chirality-like constraint. Invoking this constraint leads one to consider sigma-models which, though duality invariant, do not possess manifest Lorentz Invariance. Whilst such formalisms make sense at a classical level their quantum validity is less obvious. I address this issue by examining the renormalization of these duality invariant sigma models. This talk is based upon both forthcoming work and recent work in arXiv:0910.1345 [hep-th] and its antecedents arXiv:0708.2267, arXiv:0712.1121.