Dual diffeomorphisms and finite distance asymptotic symmetries in 3D gravity

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Abstract

We study the finite distance boundary symmetry current algebra of the most general first order theory of 3D gravity. We show that the space of quadratic generators contains diffeomorphisms but also a notion of dual diffeomorphisms, which together form either a double Witt or centerless BMS3 algebra. The relationship with the usual asymptotic symmetry algebra relies on a duality between the null and angular directions, which is possible thanks to the existence of the dual diffeomorphisms.

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APA

Geiller, M., & Goeller, C. (2022). Dual diffeomorphisms and finite distance asymptotic symmetries in 3D gravity. Physical Review D, 106(6). https://doi.org/10.1103/PhysRevD.106.064018

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