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Weyl versus Conformal Invariance in Quantum Field Theory
We argue that conformal invariance in flat spacetime implies Weyl invariance in a general curved background metric for all unitary theories in spacetime dimensions \(d \leq 10\). We also study possible curvature corrections to the Weyl transformations of operators, and show that these are absent for...
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Published in: | arXiv.org 2017-10 |
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Main Authors: | , , |
Format: | Article |
Language: | English |
Subjects: | |
Online Access: | Get full text |
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Summary: | We argue that conformal invariance in flat spacetime implies Weyl invariance in a general curved background metric for all unitary theories in spacetime dimensions \(d \leq 10\). We also study possible curvature corrections to the Weyl transformations of operators, and show that these are absent for operators of sufficiently low dimensionality and spin. We find possible `anomalous' Weyl transformations proportional to the Weyl (Cotton) tensor for \(d > 3\) (\(d = 3\)). The arguments are based on algebraic consistency conditions similar to the Wess-Zumino consistency conditions that classify possible local anomalies. The arguments can be straightforwardly extended to larger operator dimensions and higher \(d\) with additional algebraic complexity. |
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ISSN: | 2331-8422 |
DOI: | 10.48550/arxiv.1702.07079 |