Infrared finite observables in N = 8 supergravity
نویسندگان
چکیده
منابع مشابه
On a possibility of a UV finite N=8 supergravity
We compare the local Lorentz covariant all-loop counterterms built in the 4+32 on shell superspace of N=8 supergravity with those evaluated in the 4+16 light-cone superspace. We find that the on-shell light-cone counterterms for the amplitudes in all order loops break Lorentz covariance, unless the coefficient in front of them vanishes. This leads to a prediction that all-loop UV infinities sho...
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We construct the generating functional for the light-cone superfield amplitudes in a chiral momentum superspace. It generates the n-point particle amplitudes which on shell are equivalent to the covariant ones. Based on the action depending on unconstrained light-cone chiral scalar superfield, this functional provides a regular d=4 QFT path integral derivation of the Nair-type amplitude constru...
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We present the explicit expressions in N=8 supergravity for the bosonic 4-particle tree and 1-loop amplitudes including vectors and scalars. We also present the candidate 4point UV divergences in a form of helicity amplitudes, corresponding to 3-loop manifestly N=8 supersymmetric and Lorentz covariant counterterm. This may shed some light on the 3-loop finiteness of N=8 SG and on a conjectured ...
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ژورنال
عنوان ژورنال: Proceedings of the Steklov Institute of Mathematics
سال: 2011
ISSN: 0081-5438,1531-8605
DOI: 10.1134/s0081543811010056