Holographic pinning

Abstract

In a holographic probe-brane model exhibiting a spontaneously spatially modulated ground state, we introduce explicit sources of symmetry breaking in the form of ionic and antiferromagnetic lattices. For the first time in a holographic model, we demonstrate pinning, in which the translational Goldstone mode is lifted by the introduction of explicit sources of translational symmetry breaking. The numerically computed optical conductivity fits very well to a Drude-Lorentz model with a small residual metallicity, precisely matching analytic formulas for the DC conductivity. We also find an instability of the striped phase in the presence of a large-amplitude ionic lattice.

26 pages, 13 figures. v2: minor corrections, references updated

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• Effective holographic theory of charge density waves
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• Pinning of longitudinal phonons in holographic spontaneous helices
• Unified weak/strong coupling framework for nuclear matter and neutron stars
• Universal relaxation in a holographic metallic density wave phase
• Colloquium: Hydrodynamics and holography of charge density wave phases
• Gapless and gapped holographic phonons
• Incoherent transport for phases that spontaneously break translations
• Damping of Pseudo-Goldstone Fields
• Holographic approach to transport in dense QCD matter
• A simple holographic model for spontaneous breaking of translational symmetry
• Incoherent conductivity of holographic charge density waves
• Magnetotransport and Complexity of Holographic Metal-Insulator Transitions
• Diffusion for Holographic Lattices
• Low-energy modes in anisotropic holographic fluids
• Brane nucleation instabilities in non-AdS/non-CFT
• Zero sound and higher-form symmetries in compressible holographic phases
• Holographic discommensurations
• Holographic fundamental matter in multilayered media
• Novel semi-circle law and Hall sliding in a strongly interacting electron liquid
• The commensurate state and lock-in in a holographic model
• Interaction induced quasi-particle spectrum and the origin of the pinning peak in holography