Multi-Graviton Theories in the Causal Approach

TL;DR

This paper investigates multi-graviton systems within the causal quantum field theory framework, demonstrating that different gravitons cannot interact, based on a detailed perturbative analysis.

Contribution

It provides a novel causal formalism proof that multi-gravitons are non-interacting, extending previous functional formalism results.

Findings

Distinct gravitons do not interact in the causal formalism.

The proof is based on analysis of the first two orders of perturbation theory.

The approach clarifies the non-interacting nature of multi-gravitons in quantum field theory.

Abstract

The system of multi-gravitons has been considered before in the framework of functional formalism. We consider here the system of multi-gravitons in the causal formalism of quantum field theory. We derive in this formalism the fact that distinct gravitons cannot interact. The proof is based on a careful analysis of the first two orders of the perturbation theory.