# Composite gravity from a metric-independent theory of fermions

## TL;DR

This paper introduces a metric-independent, diffeomorphism-invariant fermion model that predicts a massless composite graviton, linking gravitational interactions to new physics at high energy scales.

## Contribution

It proposes a novel fermion-based model with a composite graviton, inspired by D-brane actions, and explores its implications for quantum gravity.

## Key findings

- Contains a massless composite graviton in the spectrum
- Links gravitational coupling to new physics at the cutoff scale
- Maintains metric independence and diffeomorphism invariance

## Abstract

We present a metric-independent, diffeomorphism-invariant model with interacting fermions that contains a massless composite graviton in its spectrum. The model is motivated by the supersymmetric D-brane action, modulated by a fermion potential. The gravitational coupling is related to new physics at the cutoff scale that regularizes UV divergences. We also speculate on possible extensions of the model.