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Author Nastase, H.; Rojas, F.; Rubio, C.
Title Celestial IR divergences in general most-subleading-color gluon and gravity amplitudes Type
Year 2022 Publication (up) Journal Of High Energy Physics Abbreviated Journal J. High Energy Phys.
Volume Issue 1 Pages 136
Keywords Scattering Amplitudes; Conformal Field Theory
Abstract Gluon amplitudes at most-subleading order in the 1/N expansion share a remarkable simplicity with graviton amplitudes: collinear divergences are completely absent in both and, as a consequence, their full IR behavior arises from soft gluon/graviton exchange among the external states. In this paper we study the effect of all-loop IR divergences of celestial most-subleading color gluon amplitudes and their similarities with the celestial gravity case. In particular, a simple celestial exponentiation formula for the dipole part can be written. We also analize how this exponentiation is modified by non-dipole contributions. Finally we also show that, in the Regge limit, the soft factor satisfies the Knizhnik-Zamolodchikov equation hinting at the possibility that, in this limit, an effective Wess-Zumino-Witten model would describe the dynamics of the infrared sector.
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ISSN 1029-8479 ISBN Medium
Area Expedition Conference
Notes WOS:000746997500001 Approved
Call Number UAI @ alexi.delcanto @ Serial 1530
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