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Gravity in Twistor Space and its Grassmannian Formulation
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- Symmetry, Integrability and Geometry: Methods and Applications (SIGMA)
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- Symmetry, Integrability and Geometry: Methods and Applications, 2014, том 10
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| dc.contributor.author | Cachazo, F. | |
| dc.contributor.author | Mason, L. | |
| dc.date.accessioned | 2019-02-10T19:00:24Z | |
| dc.date.available | 2019-02-10T19:00:24Z | |
| dc.date.issued | 2014 | |
| dc.identifier.citation | 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. | uk_UA |
| dc.identifier.issn | 1815-0659 | |
| dc.identifier.other | 2010 Mathematics Subject Classification: 53C28 | |
| dc.identifier.other | DOI:10.3842/SIGMA.2014.051 | |
| dc.identifier.uri | http://dspace.nbuv.gov.ua/handle/123456789/146692 | |
| dc.description.abstract | 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. | uk_UA |
| dc.description.sponsorship | This paper is a contribution to the Special Issue on Progress in Twistor Theory. The full collection is available at http://www.emis.de/journals/SIGMA/twistors.html. This work is supported by the Perimeter Institute for Theoretical Physics. Research at the Perimeter Institute is supported by the Government of Canada through Industry Canada and by the Province of Ontario through the Ministry of Research and Innovation. The work of FC is supported in part by the NSERC of Canada and MEDT of Ontario. LM is supported by a Leverhulme Fellowship. | uk_UA |
| dc.language.iso | en | uk_UA |
| dc.publisher | Інститут математики НАН України | uk_UA |
| dc.relation.ispartof | Symmetry, Integrability and Geometry: Methods and Applications | |
| dc.title | Gravity in Twistor Space and its Grassmannian Formulation | uk_UA |
| dc.type | Article | uk_UA |
| dc.status | published earlier | uk_UA |
