Field theories with conformal Carrollian symmetry
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Publication:2315733
DOI10.1007/JHEP05(2019)108zbMATH Open1416.81134arXiv1901.10147WikidataQ127830961 ScholiaQ127830961MaRDI QIDQ2315733
Author name not available (Why is that?)
Publication date: 25 July 2019
Published in: (Search for Journal in Brave)
Abstract: Conformal Carrollian groups are known to be isomorphic to Bondi-Metzner-Sachs (BMS) groups that arise as the asymptotic symmetries at the null boundary of Minkowski spacetime. The Carrollian algebra is obtained from the Poincare algebra by taking the speed of light to zero, and the conformal version similarly follows. In this paper, we construct explicit examples of Conformal Carrollian field theories as limits of relativistic conformal theories, which include Carrollian versions of scalars, fermions, electromagnetism, Yang-Mills theory and general gauge theories coupled to matter fields. Due to the isomorphism with BMS symmetries, these field theories form prototypical examples of holographic duals to gravitational theories in asymptotically flat spacetimes. The intricacies of the limiting procedure lead to a plethora of different Carrollian sectors in the gauge theories we consider. Concentrating on the equations of motion of these theories, we show that even in dimensions d=4, there is an infinite enhancement of the underlying symmetry structure. Our analysis is general enough to suggest that this infinite enhancement is a generic feature of the ultra-relativistic limit that we consider.
Full work available at URL: https://arxiv.org/abs/1901.10147
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