Hydrodynamic Modes of Holographic Weyl Semimetals

TL;DR

This paper investigates the hydrodynamic quasinormal modes in a holographic Weyl semimetal model, revealing that such modes exist only in the topological phase, thus linking hydrodynamics to topological properties.

Contribution

It introduces a holographic model of Weyl semimetals and analyzes the presence of hydrodynamic modes across different phases, highlighting their topological dependence.

Findings

Hydrodynamic modes are present only in the topological phase.

A quantum phase transition separates the topological and trivial phases.

The model captures key features of Weyl semimetal physics.

Abstract

We study the quasinormal modes of a holographic model of a Weyl semimetal. The model features quantum phase transition between a topological phase and a trivial phase. We put particular emphasis on the hydrodynamic modes and show that a hydrodynamic mode is present only in the topological Weyl semimetal phase.