paper

A General Hierarchy of Charges at Null Infinity via the Todd Polynomials

arXiv:2405.06629 · doi:10.1103/PhysRevD.111.L061903

Abstract

We give a general procedure for constructing an extended phase space for Yang-Mills theory at null infinity, capable of handling the asymptotic symmetries and construction of charges responsible for sub-leading soft theorems at all orders. The procedure is coordinate and gauge-choice independent, and can be fed into the calculation of both tree and loop-level soft limits. We find a hierarchy in the extended phase space controlled by the Bernoulli numbers arising in Todd genus computations. We give an explicit example of a calculation at tree level, in radial gauge, where we also uncover recursion relations at all orders for the equations of motion and charges.

arXiv comment7 pages

References in corpus (41)

Cited by in corpus (2)