The Action with Manifest E7 Type Symmetry

Abstract

We generalize Cremmer-Julia 1st order action of $N=8$ supergravity with manifest $E_{7(7)}$ symmetry to cases of $N=6$ with manifest $S{O}^{\ast }(12)$ and $N=5$ with manifest $SU(1,5)$ duality symmetries. These U dualities belong to groups of type E7 which do not admit a symmetric bilinear invariant for vector fields. Therefore the 2d order classical action derived from the one with manifest E7 type duality has a ghost vector field which, under appropriate boundary conditions, decouples. We show that when classical $N\ge 5$ supergravities are deformed by a candidate UV divergence the ghost field does not decouple. Therefore we argue that U duality and supersymmetry suggest an explanation of the mysterious cancellation of UV infinities at $L=4$, $N=5$ in d=4. The same reasoning implies that, in absence of duality and supersymmetry anomalies, which still require a better understanding, $N\ge 5$ perturbative supergravities may be UV finite at higher-loops.

34 p, 1 fig, 4 tables. Extended version

References in corpus (10)

• Three-Loop Superfiniteness of N=8 Supergravity
• Enhanced Ultraviolet Cancellations in N = 5 Supergravity at Four Loop
• Explicit Action of E7(7) on N=8 Supergravity Fields
• N=8 Counterterms and E7(7) Current Conservation
• The Ultraviolet Finiteness of N=8 Supergravity
• One-loop Amplitudes for N=2 Homogeneous Supergravities
• The D^{2k} R^4 Invariants of N=8 Supergravity
• Cancellation of Conformal and Chiral Anomalies in $N\ge 5$ supergravities
• Duality Constraints on Counterterms in $\mathcal{N}=5,6$ Supergravities
• Selfduality of non-linear electrodynamics with derivative corrections

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• Deformation of d=4, N> 4 Supergravities Breaks Nonlinear Local Supersymmetry