Carroll covariant scalar fields in two dimensions

Abstract Conformal Carroll symmetry generically arises on null manifolds and is important for holography of asymptotically flat spacetimes, generic black hole horizons and tensionless strings. In this paper, we focus on two dimensional (2d) null manifolds and hence on the 2d Conformal Carroll or equ...

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Main Authors: Arjun Bagchi, Aritra Banerjee, Sudipta Dutta, Kedar S. Kolekar, Punit Sharma
Format: Article
Language:English
Published: SpringerOpen 2023-01-01
Series:Journal of High Energy Physics
Subjects:
Online Access:https://doi.org/10.1007/JHEP01(2023)072
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author Arjun Bagchi
Aritra Banerjee
Sudipta Dutta
Kedar S. Kolekar
Punit Sharma
author_facet Arjun Bagchi
Aritra Banerjee
Sudipta Dutta
Kedar S. Kolekar
Punit Sharma
author_sort Arjun Bagchi
collection DOAJ
description Abstract Conformal Carroll symmetry generically arises on null manifolds and is important for holography of asymptotically flat spacetimes, generic black hole horizons and tensionless strings. In this paper, we focus on two dimensional (2d) null manifolds and hence on the 2d Conformal Carroll or equivalently the 3d Bondi-Metzner-Sachs (BMS) algebra. Using Carroll covariance, we write the most general free massless Carroll scalar field theory and discover three inequivalent actions. Of these, two viz. the time-like and space-like actions, have made their appearance in literature before. We uncover a third that we call the mixed-derivative theory. As expected, all three theories enjoy off-shell BMS invariance. Interestingly, we find that the on-shell symmetry of mixed derivative theory is a single Virasoro algebra instead of the full BMS. We discuss potential applications to tensionless strings and flat holography.
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spelling doaj.art-3384f3f9176545c08040f2a99b73eb202023-04-30T11:04:02ZengSpringerOpenJournal of High Energy Physics1029-84792023-01-012023115010.1007/JHEP01(2023)072Carroll covariant scalar fields in two dimensionsArjun Bagchi0Aritra Banerjee1Sudipta Dutta2Kedar S. Kolekar3Punit Sharma4Indian Institute of Technology KanpurOkinawa Institute of Science & TechnologyIndian Institute of Technology KanpurIndian Institute of Technology KanpurIndian Institute of Technology KanpurAbstract Conformal Carroll symmetry generically arises on null manifolds and is important for holography of asymptotically flat spacetimes, generic black hole horizons and tensionless strings. In this paper, we focus on two dimensional (2d) null manifolds and hence on the 2d Conformal Carroll or equivalently the 3d Bondi-Metzner-Sachs (BMS) algebra. Using Carroll covariance, we write the most general free massless Carroll scalar field theory and discover three inequivalent actions. Of these, two viz. the time-like and space-like actions, have made their appearance in literature before. We uncover a third that we call the mixed-derivative theory. As expected, all three theories enjoy off-shell BMS invariance. Interestingly, we find that the on-shell symmetry of mixed derivative theory is a single Virasoro algebra instead of the full BMS. We discuss potential applications to tensionless strings and flat holography.https://doi.org/10.1007/JHEP01(2023)072Conformal and W SymmetryScale and Conformal SymmetriesBosonic StringsGauge-Gravity Correspondence
spellingShingle Arjun Bagchi
Aritra Banerjee
Sudipta Dutta
Kedar S. Kolekar
Punit Sharma
Carroll covariant scalar fields in two dimensions
Journal of High Energy Physics
Conformal and W Symmetry
Scale and Conformal Symmetries
Bosonic Strings
Gauge-Gravity Correspondence
title Carroll covariant scalar fields in two dimensions
title_full Carroll covariant scalar fields in two dimensions
title_fullStr Carroll covariant scalar fields in two dimensions
title_full_unstemmed Carroll covariant scalar fields in two dimensions
title_short Carroll covariant scalar fields in two dimensions
title_sort carroll covariant scalar fields in two dimensions
topic Conformal and W Symmetry
Scale and Conformal Symmetries
Bosonic Strings
Gauge-Gravity Correspondence
url https://doi.org/10.1007/JHEP01(2023)072
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AT aritrabanerjee carrollcovariantscalarfieldsintwodimensions
AT sudiptadutta carrollcovariantscalarfieldsintwodimensions
AT kedarskolekar carrollcovariantscalarfieldsintwodimensions
AT punitsharma carrollcovariantscalarfieldsintwodimensions