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Asymptotic symmetry groups and operator algebras

par Schulgin, Waldemar ;Troost, Jan
Référence The Journal of high energy physics, 2013, 9
Publication Publié, 2013

Article révisé par les pairs

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Résumé :

We associate vertex operators to space-time diffeomorphisms in flat space string theory, and compute their algebra, which is a diffeomorphism algebra with higher derivative corrections. As an application, we realize the asymptotic symmetry group BMS3 of three-dimensional flat space in terms of vertex operators on the string worldsheet. This provides an embedding of the BMS3 algebra in a consistent theory of quantum gravity. Higher derivative corrections vanish asymptotically. An appendix is dedicated to ά corrected algebras in conformal field theory and string theory.