Doubled α '-geometry
Abstract
We develop doubled-coordinate field theory to determine the α ' corrections to the massless sector of oriented bosonic closed string theory. Our key tool is a string current algebra of free left-handed bosons that makes O(D,D) T-duality manifest. While T-dualities are unchanged, diffeomorphisms and b-field gauge transformations receive corrections, with a gauge algebra given by an α '-deformation of the duality-covariantized Courant bracket. The action is cubic in a double metric field, an unconstrained extension of the generalized metric that encodes the gravitational fields. Our approach provides a consistent truncation of string theory to massless fields with corrections that close at finite order in α '.
- Publication:
-
Journal of High Energy Physics
- Pub Date:
- February 2014
- DOI:
- 10.1007/JHEP02(2014)065
- arXiv:
- arXiv:1306.2970
- Bibcode:
- 2014JHEP...02..065H
- Keywords:
-
- Gauge Symmetry;
- Bosonic Strings;
- Conformal Field Models in String Theory;
- String Duality;
- High Energy Physics - Theory
- E-Print:
- 54 pages, v2: version published in JHEP