Gravity in Twistor Space and its Grassmannian Formulation
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
| Title |
Gravity in Twistor Space and its Grassmannian Formulation
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| Creator |
Cachazo, F.
Mason, L. |
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| Description |
We prove the formula for the complete tree-level S-matrix of N=8 supergravity recently conjectured by two of the authors. The proof proceeds by showing that the new formula satisfies the same BCFW recursion relations that physical amplitudes are known to satisfy, with the same initial conditions. As part of the proof, the behavior of the new formula under large BCFW deformations is studied. An unexpected bonus of the analysis is a very straightforward proof of the enigmatic 1/z⁻² behavior of gravity. In addition, we provide a description of gravity amplitudes as a multidimensional contour integral over a Grassmannian.
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| Date |
2019-02-10T19:00:24Z
2019-02-10T19:00:24Z 2014 |
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| Type |
Article
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| Identifier |
Gravity in Twistor Space and its Grassmannian Formulation / F. Cachazo, L. Mason, D. Skinner // Symmetry, Integrability and Geometry: Methods and Applications. — 2014. — Т. 10. — Бібліогр.: 36 назв. — англ.
1815-0659 2010 Mathematics Subject Classification: 53C28 DOI:10.3842/SIGMA.2014.051 http://dspace.nbuv.gov.ua/handle/123456789/146692 |
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| Language |
en
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| Relation |
Symmetry, Integrability and Geometry: Methods and Applications
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| Publisher |
Інститут математики НАН України
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