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Chiral shift symmetries as an infinite tower of subleading super-shift symmetries

par Barnich, Glenn ;Ciambelli, Luca ;Gonzalez, Hernan A.
Référence The journal of high energy physics (Online), 2024, 8, 29
Publication Publié, 2024-08-01

Article révisé par les pairs

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Résumé :

Chiral shift symmetries of the massless free bosons in two dimensions are global symmetries that are somewhat similar to asymptotic symmetries. They are most transparent in double-null coordinates where they are parametrized by two functions of one variable. In BMS-type coordinates, half of them appear as an infinite tower of sub-leading super-shift symmetries.