2018/04/30 by Ulf Gran, Marcus Tornsö, Tobias Zingg +1
Computer Science · Physics and Astronomy · #Condensed matter physics #Electron #Formalism (music) #Graphene #Holography #Omega #Physics #Plasmon #Quantum Electrodynamics and Casimir Effect #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Spectroscopy #Statistical physics #Theoretical physics #cond-mat.str-el #hep-th
paper · pdf · doi:10.21468/scipostphys.8.6.093
published as SciPost Phys. 8, 093 (2020) · 16 pages, 4 figures. v5: technical details and discussion regarding holographic renormalization added in the appendices, submission to SciPost
arxiv created 2020/05/26 · openalex publication_date 2020/06/25 · arxiv updated 2020/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 in strongly correlated systems described by holographic Maxwell theories. The characteristic ω ∝ √(k) <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mi>ω</mml:mi> <mml:mo>∝</mml:mo> <mml:msqrt> <mml:mi>k</mml:mi> </mml:msqrt> </mml:mrow> </mml:math> plasmon dispersion for 2D materials, such as graphene, naturally emerges from this formalism. We also demonstrate this by constructing the first holographic model containing this feature. This provides new insight into modeling such systems from a holographic point of view, bottom-up and top-down alike. Beyond that, this method provides a general framework to compute the dynamical charge response of strange metals, which has recently become experimentally accessible due to the novel technique of momentum-resolved electron energy-loss spectroscopy (M-EELS). This framework therefore opens up the exciting possibility of testing holographic models for strange metals against actual experimental data.