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arXiv · 1904.06237

Density response of holographic metallic IR fixed points with translational pseudo-spontaneous symmetry breaking

Aurelio Romero-Bermúdez
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Abstract

The density response of charged liquids contains a collective excitation known as the plasmon. In holographic systems with translational invariance the origin of this collective excitation is traced back to the presence of zero-sound. Using a holographic model in which translational symmetry is broken pseudo-spontaneously, we show the density response is not dominated by a single isolated mode at low momentum and temperature. As a consequence, the density response contains a broad asymmetric peak with an attenuation which does not increase monotonically with momentum and temperature.

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Aurelio Romero-Bermúdez. 2019-04-12. Density response of holographic metallic IR fixed points with translational pseudo-spontaneous symmetry breaking. https://doi.org/10.1007/jhep07(2019)153

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