Canceling the Anomaly in the Matrix of Supergravity
Journal Article
·
· Physical Review Letters
N = 4 supergravity is understood to contain a U (1) anomaly which manifests itself via the nonvanishing of loop-level scattering amplitudes that violate a tree-level charge conservation rule. In this Letter we provide detailed evidence that at one loop such anomalous amplitudes can be set to zero by the addition of a finite local counterterm. We show that the same counterterm also cancels evanescent contributions that play an important role in the analysis of ultraviolet divergences in dimensionally regularized gravity. These cancellations call for a reanalysis of the four-loop ultraviolet divergences previously found in this theory without the addition of such counterterms.
- Research Organization:
- Univ. of California, Los Angeles, CA (United States); Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- SC0009937; SC0013699
- OSTI ID:
- 1469040
- Alternate ID(s):
- OSTI ID: 1498981
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Vol. 121 Journal Issue: 10; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 17 works
Citation information provided by
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Web of Science
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