Emergent Lorentz invariance with chiral fermions

TL;DR

This paper investigates how Lorentz invariance can emerge at low energies in strongly interacting fermionic theories using holography, focusing on the emergence of chiral fermions.

Contribution

It demonstrates the emergence of Lorentz symmetry and chiral fermions in the infrared via holographic renormalization group flows from non-Lorentz invariant theories.

Findings

Lorentz invariance emerges at low energies.

Chiral fermions appear in the infrared.

Holographic methods effectively describe strong coupling dynamics.

Abstract

We study renormalization group flows in strongly interacting field theories with fermions that correspond to transitions between a theory without Lorentz invariance at high energies down to a theory with approximate Lorentz symmetry in the infrared. Holographic description of the strong coupling is used. The emphasis is made on emergence of chiral fermions in the low-energy theory.