Abstract
This paper investigates the β-symmetry of the heterotic string theory at order α′ in the context of open spacetime manifolds. Our analysis reveals that the parity-odd component of the effective action at this order remains invariant under β-transformations. Furthermore, we demonstrate that the corresponding β-transformations leave the Gibbons-Hawking boundary term invariant.
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Garousi, M.R. Exploring β-symmetry in heterotic theory at order α′ with boundary term. J. High Energ. Phys. 2023, 21 (2023). https://doi.org/10.1007/JHEP09(2023)021
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DOI: https://doi.org/10.1007/JHEP09(2023)021