Heterotic effective action and duality symmetries revisited
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13130_2015_Article_9755.pdf
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Author(s)
Hohm, Olaf
Sen, Ashoke
Zwiebach, Barton
Date Issued
February 2015
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Hohm, Olaf, Ashoke Sen, and Barton Zwiebach. "Heterotic effective action and duality symmetries revisited." Journal of High Energy Physics (February 2015) 2015:79, pp.1-29.
Version
Final published version
Abstract
The dimensional reduction of heterotic supergravity with gauge fields truncated to the Cartan subalgebra exhibits a continuous O(d, d + 16; ℝ) global symmetry, related to the O(d, d + 16; ℤ) T-duality of heterotic strings on a d-torus. The O(d, d + 16; ℝ) symmetry is not present, however, if the supergravity reduction is done including the full set of E 8 × E 8 or SO(32) gauge fields. We analyze which duality symmetries are realized to all orders in α ′ in the proper effective field theories for the massless string states. We find a universal O(d, d; ℝ) symmetry, also predicted by double field theory. We confirm this by giving a novel formulation of the dimensionally reduced supergravity in terms of O(d, d) multiplets, and we discuss cases of symmetry enhancement.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1007/JHEP02(2015)079
