Λ scattering equations
| dc.contributor.author | Gomez, Humberto | |
| dc.date.accessioned | 2019-07-03T22:13:14Z | |
| dc.date.available | 2019-07-03T22:13:14Z | |
| dc.date.issued | 2016-06-01 | |
| dc.description.abstract | Abstract: The CHY representation of scattering amplitudes is based on integrals over the moduli space of a punctured sphere. We replace the punctured sphere by a double-cover version. The resulting scattering equations depend on a parameter Λ controlling the opening of a branch cut. The new representation of scattering amplitudes possesses an enhanced redundancy which can be used to fix, modulo branches, the location of four punctures while promoting Λ to a variable. Via residue theorems we show how CHY formulas break up into sums of products of smaller (off-shell) ones times a propagator. This leads to a powerful way of evaluating CHY integrals of generic rational functions, which we call the Λ algorithm. © 2016, The Author(s). | en_US |
| dc.identifier.issn | 11266708 | |
| dc.identifier.uri | https://repositorio.usc.edu.co/handle/20.500.12421/257 | |
| dc.language.iso | en | en_US |
| dc.publisher | Springer Verlag | en_US |
| dc.subject | Differential and Algebraic Geometry | en_US |
| dc.subject | Field Theories in Higher Dimensions | en_US |
| dc.subject | Scattering Amplitudes | en_US |
| dc.subject | Superstrings and Heterotic Strings | en_US |
| dc.title | Λ scattering equations | en_US |
| dc.type | Article | en_US |
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