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:
Report number:
  • CPHT-RR-005-1212,
  • KCL-MTH-12-12,
  • IMPERIAL-TP-12-KSS-02

Citations per year

201220152018202120240246810
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