期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 2, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP02(2014)065
关键词
Gauge Symmetry; Bosonic Strings; Conformal Field Models in String Theory; String Duality
资金
- National Science Foundation [PHY-0969739]
- DFG Transregional Collaborative Research Centre TRR 33
- DFG cluster of excellence Origin and Structure of the Universe
- Division Of Physics
- Direct For Mathematical & Physical Scien [1316617] Funding Source: National Science Foundation
We develop doubled-coordinate field theory to determine the alpha' 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 alpha'-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 alpha'.
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