Holographic Response of Electron Clouds

TL;DR

This paper investigates the holographic response of electron clouds at finite temperature using gauge/gravity duality, comparing their quasinormal and collective modes to those in black hole backgrounds to understand their physical differences.

Contribution

It introduces the finite temperature electron cloud background and analyzes its quasinormal and collective modes, highlighting differences from traditional black hole models.

Findings

Distinct dispersion relations for electron cloud modes.

Qualitative differences from Schwarzschild and Reissner-Nordström backgrounds.

Insights into realistic holographic fermion models.

Abstract

In order to make progress towards more realistic models of holographic fermion physics, we use gauge/gravity duality to compute the dispersion relations for quasinormal modes and collective modes for the electron cloud background, i.e. the non-zero temperature version of the electron star. The results are compared to the corresponding results for the Schwarzschild and Reissner-Nordstr\"om black hole backgrounds, and the qualitative differences are highlighted and discussed.