One-loop CHY-Integrand of Bi-adjoint Scalar Theory
High Energy Physics - Theory
2022-06-15 v2
Abstract
In this paper, the one-loop CHY-integrands of bi-adjoint scalar theory has been reinvestigated. Differing from previous constructions, we have explicitly removed contributions from tadpole and massless bubbles when taking the forward limit of corresponding tree-level amplitudes. The way to remove those singular contributions is to exploit the idea of 'picking poles', which is to multiply a special cross ratio factor with the role of isolating terms having a particular pole structure.
Keywords
Cite
@article{arxiv.1912.12960,
title = {One-loop CHY-Integrand of Bi-adjoint Scalar Theory},
author = {Bo Feng and Chang Hu},
journal= {arXiv preprint arXiv:1912.12960},
year = {2022}
}
Comments
29 pages, 8 figures