Abstract
We examine a two parameter family of gravitational actions which contains higher-derivative terms. These are such that the entire action is invariant under corrected T-duality rules, which we derive explicitly. Generically this action does not describe low energy string backgrounds except for isolated choices for the parameters. Nevertheless, we demonstrate that in this theory the entropy and the temperature of generic non-extremal black hole solutions are T-duality invariant. This further supports the idea put forward in our previous work that T-duality might provide physical equivalences beyond the realm of string theory.
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ArXiv ePrint: 1903.05554
Dedicated to the memory of Stephen Hawking, one year after his passing.
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Edelstein, J.D., Sfetsos, K., Sierra-Garcia, J.A. et al. T-duality equivalences beyond string theory. J. High Energ. Phys. 2019, 82 (2019). https://doi.org/10.1007/JHEP05(2019)082
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DOI: https://doi.org/10.1007/JHEP05(2019)082