Next to subleading soft-graviton theorem in arbitrary dimensions

TL;DR

This paper proves that the next-to-subleading soft graviton theorem is universal at tree level across all dimensions using the CHY formalism, extending previous results in gravitational scattering amplitudes.

Contribution

It demonstrates the universality of the next-to-subleading soft graviton theorem in arbitrary dimensions at tree level using the CHY formalism.

Findings

Next-to-subleading soft factor is universal in arbitrary dimensions.

The proof employs the CHY formalism for gravity amplitudes.

The result extends the soft theorem to a broader dimensional context.

Abstract

We study the soft graviton theorem recently proposed by Cachazo and Strominger. We employ the Cachazo, He and Yuan formalism to show that the next to subleading order soft factor for gravity is universal at tree level in arbitrary dimensions.