Comment on Multigraviton Scattering in the Matrix Model

TL;DR

This paper refutes a recent claim by explicitly calculating the matrix model effective action, demonstrating that a specific term does not appear in the limit where the radius R is much larger than r.

Contribution

The authors provide a direct calculation showing the absence of a previously claimed term in the matrix model effective action, clarifying the model's behavior.

Findings

The term $v_{12}^2 v_{23}^2 v_{13}^2/{R^7 r^7}$ does not appear in the effective action.

Contradicts recent results claiming the presence of this term.

Supports the consistency of the matrix model in the specified limit.

Abstract

We show by explicit calculation that the matrix model effective action does not contain the term $v_{12}^2 v_{23}^2 v_{13}^2/{R^7 r^7}$, in the limit $R \gg r$, contradicting a result reported recently.