the resulting loop integrand has propagators that are linear in the loop momentum unlike
Feynman's. In this paper, we present a new technique that directly produces quadratic
propagators identical to Feynman's from the CHY approach. This paper focuses on the Φ 3
theory, but extensions to other theories are briefly discussed. In addition, our proposal has
an interesting geometric meaning; we can interpret this new formula as a unitary cut on a …