Anomalies and divergences in N=4 supergravity
Dec, 2012
15 pages
Published in:
- Phys.Lett.B 719 (2013) 424-429
- Published: Feb 26, 2013
e-Print:
- 1212.0841 [hep-th]
Report number:
- CPHT-RR-005-1212,
- KCL-MTH-12-12,
- IMPERIAL-TP-12-KSS-02
View in:
Citations per year
Abstract: (Elsevier)
The invariants in D=4, N=4 supergravity are discussed up to the three-loop order (where one expects a general R^4 structure). Because there is an anomaly in the rigid SL(2,R) symmetry of this theory, the analysis of possible restrictions on three-loop divergences due to duality needs careful treatment. We show that this anomalous symmetry is still strong enough at the three-loop order to require duality invariance of candidate counterterms. Provided one makes the additional assumption that there exists a full 16-supercharge off-shell formulation of the theory, counterterms at L>=2 loops would also have to be writable as full-superspace integrals. At the three-loop order such a duality-invariant full-superspace integral candidate counterterm exists, but its duality invariance is marginal in the sense that the full-superspace counter-Lagrangian is not itself duality-invariant. We show that, subject to the assumption that a full off-shell quantisation formalism exists, such marginal invariants are not allowable as counterterms.Note:
- 15 pages, version published in Phys. Lett. B
- duality: invariance
- supergravity: 4
- symmetry: SL(2,R)
- off-shell
- anomaly
- quantization
- superspace
References(42)
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