Journal
PHYSICAL REVIEW D
Volume 98, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.98.125015
Keywords
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Funding
- DOE [de-sc0009988]
- National Science Foundation [PHY-160653]
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We study light-ray operators constructed from the energy-momentum tensor in d-dimensional Lorentzian conformal field theory. These include in particular the average null energy operator. The commutators of parallel light-ray operators on a codimension one light sheet form an infinite-dimensional algebra. We determine this light-ray algebra and find that the d-dimensional (generalized) Bondi-van der Burg-Metzner-Sachs algebra, including both the supertranslation and the super-rotation, is a subalgebra. We verify this algebra in correlation functions of free scalar field theory. We also determine the infinitedimensional algebra of light-ray operators built from non-Abelian spin-one conserved currents.
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