Fermi-point scenario for emergent gravity

TL;DR

This paper explores the idea that gravity emerges from topological defects in momentum space called Fermi points, discussing implications for fermion masses, the cosmological constant, universe flatness, and Lorentz violation bounds.

Contribution

It proposes a novel Fermi-point scenario where gravity emerges from momentum space defects, offering new insights into fundamental constants and cosmological properties.

Findings

Natural values of fermion masses are consistent with the scenario.

The cosmological constant may be explained by the Fermi-point framework.

Constraints on Lorentz violation are derived from the model.

Abstract

Let us assume that gravity is an emergent low-energy phenomenon arising from a topologically stable defect in momentum space -- the Fermi point. What are the consequences? We discuss the natural values of fermion masses and cosmological constant; flatness of the Universe; bounds on Lorentz violation; etc.