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Higher derivative corrections to black brane thermodynamics and the weak gravity conjecture

Toshifumi Noumi, Hibiki Satake

22 pages, 1 figure; v2: references added, minor corrections; v3: minor corrections

Abstract: We study higher derivative corrections to black brane thermodynamics and their implications for the weak gravity conjecture for $p$-form gauge fields. In particular we show that higher derivative corrections decrease tension-to-charge ratios of extremal black branes as implied by the weak gravity conjecture, if four-derivative couplings follow scattering positivity bounds. We also demonstrate that entropy corrections in the micro canonical ensemble are positive under the same assumptions. This extends earlier works in the Einstein-Maxwell theory to $p$-form gauge fields in general spacetime dimensions.

Submitted to arXiv on 06 Oct. 2022