A d-dimensional stress tensor for Minkd+2 gravity
Abstract
We consider the tree-level scattering of massless particles in (d+2)-dimensional asymptotically flat spacetimes. The $$S$$ -matrix elements are recast as correlation functions of local operators living on a space-like cut $$M$$d of the null momentum cone. The Lorentz group SO(d + 1, 1) is nonlinearly realized as the Euclidean conformal group on $$M$$d. Operators of non-trivial spin arise from massless particles transforming in non-trivial representations of the little group SO(d), and distinguished operators arise from the soft-insertions of gauge bosons and gravitons. The leading soft-photon operator is the shadow transform of a conserved spin-one primary operator Ja, and the subleading soft-graviton operator is the shadow transform of a conserved spin-two symmetric traceless primary operator Tab. The universal form of the soft-limits ensures that Ja and Tab obey the Ward identities expected of a conserved current and energy momentum tensor in a Euclidean CFTd, respectively.
- Authors:
-
- Harvard Univ., Cambridge, MA (United States). Center for the Fundamental Laws of Nature
- Harvard Univ., Cambridge, MA (United States). Center for the Fundamental Laws of Nature, School of Natural Sciences, Inst. for Advanced Study
- Publication Date:
- Research Org.:
- Harvard Univ., Cambridge, MA (United States). Inst. for Advanced Study, Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1505224
- Grant/Contract Number:
- SC0007870; SC0009988
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 5; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Berlin
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Conformal Field Theory; Field Theories in Higher Dimensions; Models of Quantum Gravity; Scattering Amplitudes
Citation Formats
Kapec, Daniel, and Mitra, Prahar. A d-dimensional stress tensor for Minkd+2 gravity. United States: N. p., 2018.
Web. doi:10.1007/jhep05(2018)186.
Kapec, Daniel, & Mitra, Prahar. A d-dimensional stress tensor for Minkd+2 gravity. United States. https://doi.org/10.1007/jhep05(2018)186
Kapec, Daniel, and Mitra, Prahar. Tue .
"A d-dimensional stress tensor for Minkd+2 gravity". United States. https://doi.org/10.1007/jhep05(2018)186. https://www.osti.gov/servlets/purl/1505224.
@article{osti_1505224,
title = {A d-dimensional stress tensor for Minkd+2 gravity},
author = {Kapec, Daniel and Mitra, Prahar},
abstractNote = {We consider the tree-level scattering of massless particles in (d+2)-dimensional asymptotically flat spacetimes. The $S$ -matrix elements are recast as correlation functions of local operators living on a space-like cut $M$d of the null momentum cone. The Lorentz group SO(d + 1, 1) is nonlinearly realized as the Euclidean conformal group on $M$d. Operators of non-trivial spin arise from massless particles transforming in non-trivial representations of the little group SO(d), and distinguished operators arise from the soft-insertions of gauge bosons and gravitons. The leading soft-photon operator is the shadow transform of a conserved spin-one primary operator Ja, and the subleading soft-graviton operator is the shadow transform of a conserved spin-two symmetric traceless primary operator Tab. The universal form of the soft-limits ensures that Ja and Tab obey the Ward identities expected of a conserved current and energy momentum tensor in a Euclidean CFTd, respectively.},
doi = {10.1007/jhep05(2018)186},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2018,
place = {United States},
year = {Tue May 29 00:00:00 EDT 2018},
month = {Tue May 29 00:00:00 EDT 2018}
}
Web of Science
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