Holographic Plasmons

TL;DR

This paper uses holography to model strongly correlated systems and computes the dispersion relation for plasmons, linking theoretical predictions with experimental techniques like M-EELS to advance understanding of strange metals.

Contribution

It extends holographic methods to include dynamical charge response and performs the first holographic calculation of plasmon dispersion relations.

Findings

First holographic computation of plasmon dispersion relation.

Establishes a connection between holographic models and M-EELS measurements.

Provides a new framework for studying collective excitations in strongly correlated materials.

Abstract

Since holography yields exact results, even in situations where perturbation theory is not applicable, it is an ideal framework for modeling strongly correlated systems. We extend previous holographic methods to take the dynamical charge response into account and use this to perform the first holographic computation of the dispersion relation for plasmons. As the dynamical charge response of strange metals can be measured using the new technique of momentum-resolved electron energy-loss spectroscopy (M-EELS), plasmon properties are the next milestone in verifying predictions from holographic models of new states of matter.