Gapless and gapped holographic phonons - Archive ouverte HAL
Article Dans Une Revue Journal of High Energy Physics Année : 2020

Gapless and gapped holographic phonons

Andrea Amoretti
  • Fonction : Auteur
Blaise Goutéraux
Daniele Musso
  • Fonction : Auteur

Résumé

We study a holographic model where translations are both spontaneously and explicitly broken, leading to the presence of (pseudo)-phonons in the spectrum. The weak explicit breaking is due to two independent mechanisms: a small source for the condensate itself and additional linearly space-dependent marginal operators. The low energy dynamics of the model is described by Wigner crystal hydrodynamics. In absence of a source for the condensate, the phonons remain gapless, but momentum is relaxed. Turning on a source for the condensate damps and pins the phonons. Finally, we verify that the universal relation between the phonon damping rate, mass and diffusivity reported in [1] continues to hold in this model for weak enough explicit breaking.
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Dates et versions

hal-02383307 , version 1 (08-02-2024)

Identifiants

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Andrea Amoretti, Daniel Areán, Blaise Goutéraux, Daniele Musso. Gapless and gapped holographic phonons. Journal of High Energy Physics, 2020, 2020, pp.058. ⟨10.1007/JHEP01(2020)058⟩. ⟨hal-02383307⟩
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