TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.6.2.027
TI  - Photoemission "experiments" on holographic lattices
PY  - 2023/04/06
UR  - https://scipost.org/SciPostPhysCore.6.2.027
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 6
IS  - 2
SP  - 027
A1  - Herček, Filip
AU  - Gecin, Vladan
AU  - Čubrović, Mihailo
AB  - We construct a 2D holographic ionic lattice with hyperscaling-violating infrared geometry and study single-electron spectral functions ("ARPES photoemission curves") on this background. The spectra typically show a three-peak structure, where the central peak undergoes a crossover from a sharp but not Fermi-liquid-like quasiparticle to a wide incoherent maximum, and the broad side peaks resemble the Hubbard bands. These findings are partially explained by a perturbative near-horizon analysis of the bulk Dirac equation. Comparing the holographic Green functions in imaginary frequency with the Green functions of the Hubbard model obtained from quantum Monte Carlo, we find that the holographic model provides a very good fit to the Hubbard Green function. However, the information loss when transposing the holographic Green functions to imaginary frequencies implies that a deeper connection to Hubbard-like models remains questionable.
ER  -

@Article{10.21468/SciPostPhysCore.6.2.027,
	title={{Photoemission "experiments" on holographic lattices}},
	author={Filip Herček and Vladan Gecin and Mihailo Čubrović},
	journal={SciPost Phys. Core},
	volume={6},
	pages={027},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.6.2.027},
	url={https://scipost.org/10.21468/SciPostPhysCore.6.2.027},
}