The Exceptional Sigma Model
High Energy Physics - Theory
2018-05-09 v2
Abstract
We detail the construction of the exceptional sigma model, which describes a string propagating in the "extended spacetime" of exceptional field theory. This is to U-duality as the doubled sigma model is to T-duality. Symmetry specifies the Weyl-invariant Lagrangian uniquely and we show how it reduces to the correct 10-dimensional string Lagrangians. We also consider the inclusion of a Fradkin-Tseytlin (or generalised dilaton) coupling as well as a reformulation with dynamical tension.
Keywords
Cite
@article{arxiv.1802.00442,
title = {The Exceptional Sigma Model},
author = {Alex S. Arvanitakis and Chris D. A. Blair},
journal= {arXiv preprint arXiv:1802.00442},
year = {2018}
}
Comments
38 pages + appendices v2: minor changes, published version