Conformal Supergravity in Twistor-String Theory (original) (raw)
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Abstract
Conformal supergravity arises in presently known formulations of twistor-string theory either via closed strings or via gauge-singlet open strings. We explore this sector of twistor-string theory, relating the relevant string modes to the particles and fields of conformal supergravity. We use the twistor-string theory to compute some tree level scattering amplitudes with supergravitons. Since the supergravitons interact with the same coupling constant as the Yang-Mills fields, conformal supergravity states will contribute to loop amplitudes of Yang-Mills gluons in these theories. Those loop amplitudes will therefore not coincide with the loop amplitudes of pure super Yang-Mills theory.
Publication:
Journal of High Energy Physics
Pub Date:
August 2004
DOI:
arXiv:
Bibcode:
Keywords:
- Superstrings and Heterotic Strings Topological Strings Classical Theories of Gravity;
- High Energy Physics - Theory
E-Print:
43 pages harvmac tex, added footnote to introduction