2021/05/31 by Xi-Jing Wang, Wei-Jia Li · 11 citations
Physics and Astronomy · #Axion #Black Holes and Theoretical Physics #Boundary value problem #Cauchy stress tensor #Dark Matter and Cosmic Phenomena #High-Energy Particle Collisions Research #Holography #Phonon #Spontaneous symmetry breaking #Symmetry breaking #Tensor (intrinsic definition) #Translational symmetry #cond-mat.str-el #gr-qc #hep-th
paper · pdf · doi:10.1007/jhep07(2021)131
published in Journal of High Energy Physics 2021(7) (Springer Nature) · v3: 29 pages, 11 figures, matching the version published in JHEP
openalex created_date 2021/05/24 · openalex publication_date 2021/07/01 · arxiv created 2021/07/21 · arxiv updated 2021/12/09 · openalex updated_date 2026/08/05
A bstract In this paper, we show that a simple generalization of the holographic axion model can realize spontaneous breaking of translational symmetry by considering a special gauge-axion higher derivative term. The finite real part and imaginary part of the stress tensor imply that the dual boundary system is a viscoelastic solid. By calculating quasi-normal modes and making a comparison with predictions from the elasticity theory, we verify the existence of phonons and pseudo-phonons, where the latter is realized by introducing a weak explicit breaking of translational symmetry, in the transverse channel. Finally, we discuss how the phonon dynamics affects the charge transport.