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New Ambitwistor String Theories
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We describe new ambitwistor string theories that give rise to the recent amplitude formulae for Einstein-Yang-Mills, (Dirac)-Born-Infeld, Galileons and others introduced by Cachazo, He and Yuan. In the case of the Einstein-Yang-Mills amplitudes, an important role is played by a novel worldsheet conformal field theory that provides the appropriate colour factors precisely without the spurious multitrace terms of earlier models that had to be ignored by hand. This is needed to obtain the correct multitrace terms that arise when Yang-Mills is coupled to gravity.
Forward citations
Cited by 2 Pith papers
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Bosonic sectorized strings and the $(DF)^{2}$ theory
The current algebra extension of the bosonic sectorized string reproduces the mass-deformed (DF)^2 plus YM plus phi^3 effective action at the level of kinetic terms and three-point amplitudes.
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Supertwistor description of ambitwistor strings
A supertwistor-based 10D ambitwistor string is built and shown, in light-cone gauge, to reproduce the tree amplitudes of the RNS ambitwistor string.
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