Celestial Berends-Giele current

Abstract

Celestial amplitude plays an important role in the understanding of holography. Computing celestial amplitudes by recursion can deepen our understanding of the structure of celestial amplitudes. As an important recursion method, the Berends-Giele (BG) currents on the celestial sphere are worth studying. In this paper, we study the celestial BG recursion and utilize this to calculate some typical examples. We also explore the OPE behavior of celestial BG currents. Moreover, we generalize the "sewing procedure" for BG currents to the celestial case.

Accepted by JHEP

References in corpus (4)

• Gluon Amplitudes as 2d Conformal Correlators
• Non-abelian $Z$-theory: Berends-Giele recursion for the ${\alpha }^{\prime }$-expansion of disk integrals
• Proof of the MHV vertex expansion for all tree amplitudes in N=4 SYM theory
• Celestial Mellin Amplitude

Cited by in corpus (5)

• Celestial self-dual Yang-Mills theory: a new formula and the OPE limit
• Systematic approach to $\ell$-loop planar integrands from the classical equation of motion
• The off-shell expansion relation of the Yang-Mills scalar theory
• The bi-adjoint scalar $\ell$-loop planar integrand recursion and graded inverse variables
• The Aharony-Bergman-Jafferis-Maldacena theory on a circle