A bstract We study the dynamics and relaxation of bulk plasmons in strongly coupled quantum critical systems using holographic framework. analyze dispersion relation plasmonic modes detail for an illustrative class bottom-up models. Comparing to a simple hydrodynamic formula, we entangle complicated interplay between three least damped shed light on underlying physical processes. Such as dependence plasma frequency effective time terms electromagnetic coupling, charge temperature system....

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

For strongly interacting systems holographic duality is a powerful framework for computing e.g. dispersion relations to all orders in perturbation theory. Using the standard Reissner-Nordstöm black hole as model (strange) metal, we obtain exotic both plasmon modes and quasinormal certain intermediate values of charge hole. The obtained show dissipative behavior which compare generic expectations from Caldeira-Leggett quantum dissipation. Based on these considerations, investigate how...

We study in detail the transverse collective modes of simple holographic models presence electromagnetic Coulomb interactions. render Maxwell gauge field dynamical via mixed boundary conditions, corresponding to a double trace deformation theory. consider three different situations: (i) plasma with conserved momentum, (ii) (dirty) finite momentum relaxation and (iii) viscoelastic propagating phonons. observe two interesting new features induced by interactions: mode repulsion between shear...

A bstract We consider a neutral holographic plasma with dynamical electromagnetic interactions in finite external magnetic field. The Coulomb are introduced via mixed boundary conditions for the Maxwell gauge collective modes at wave-vector analyzed detail and compared to magneto-hydrodynamics results valid only small fields. Surprisingly, large field, we observe appearance of two plasmon-like whose corresponding effective frequency grows field is not supported by any background charge...

We demonstrate how self-sourced collective modes - of which the plasmon is a prominent example due to its relevance in modern technological applications are identified strongly correlated systems described by holographic Maxwell theories. The characteristic $\omega \propto \sqrt{k}$ dispersion for 2D materials, such as graphene, naturally emerges from this formalism. also constructing first model containing feature. This provides new insight into modeling point view, bottom-up and top-down...

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

A bstract We describe a strongly coupled layered system in 3+1 dimensions by means of top-down D-brane construction. Adjoint matter is encoded large- N c stack D3-branes, while fundamental confined to (2 + 1)-dimensional defects introduced f smeared D5-branes. To the anisotropic Lifshitz-like background geometry, we add single flavor D7-brane treated probe limit. Such bulk setup corresponds partially quenched approximation for dual field theory. The holographic model sheds light on physics...