dc.contributor.author | He, S | en_US |
dc.contributor.author | Huang, YT | en_US |
dc.contributor.author | Wen, C | en_US |
dc.date.accessioned | 2018-05-03T16:00:07Z | |
dc.date.available | 2014-12-01 | en_US |
dc.date.issued | 2014-12-16 | en_US |
dc.date.submitted | 2018-05-02T17:15:14.656Z | |
dc.identifier.issn | 1126-6708 | en_US |
dc.identifier.other | 10.1007/JHEP12(2014)115 | |
dc.identifier.uri | http://qmro.qmul.ac.uk/xmlui/handle/123456789/36715 | |
dc.description.abstract | © The Author(s). In this paper, we study loop corrections to the recently proposed new soft theorems of Cachazo and Strominger [1], for both gravity and gauge theory amplitudes. We first review the proof of its tree-level validity based on BCFW recursion relations, which also establishes an infinite series of universals soft functions for MHV amplitudes, and a generalization to supersymmetric cases. For loop corrections, we focus on infrared finite, rational amplitudes at one loop, and apply recursion relations with boundary or double-pole contributions. For all-plus amplitudes, we prove that the subleading soft theorems are exact to all multiplicities for gauge theory and up to 12-points for gravity amplitudes. For single-minus amplitudes, while the subleading soft theorems are again exact for the minus-helicity soft leg, for plus-helicity loop corrections are required. Using recursion relations, we identify the source of such mismatch as stemming from the special contribution containing double poles, and obtain the all multiplicity one-loop corrections to the subleading soft behavior in Yang-Mills theory. We also comment on the derivation of soft theorems using BCFW recursion in arbitrary dimensions. | en_US |
dc.description.sponsorship | The work of S. H is supported by Zurich
Financial Services Membership and the Ambrose Monell Foundation. The work of Y-t.
H is supported by the National Science Foundation Grant PHY-1314311 . The work of
C.W is supported by the Science and Technology Facilities Council Consolidated Grant
ST/J000469/1 String theory, gauge theory & duality | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Journal of High Energy Physics | en_US |
dc.rights | Creative Commons Attribution License | |
dc.title | Loop corrections to soft theorems in gauge theories and gravity | en_US |
dc.type | Article | |
dc.rights.holder | The Author(s) 2014 | |
dc.identifier.doi | 10.1007/JHEP12(2014)115 | en_US |
pubs.issue | 12 | en_US |
pubs.notes | No embargo | en_US |
pubs.publication-status | Published | en_US |
pubs.volume | 2014 | en_US |
dcterms.dateAccepted | 2014-12-01 | en_US |