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Résumé |
I will study the fermionic response of the holographic model of a strange metal in the periodic
potential of the ionic lattice. Apart from the observation of the standard umklapp and the band
formation, which is expected to occur in any system with the periodic potential, I will show
that in the regimes of strong modulation of the chemical potential the lines of zeros of the
spectral function, which are generic in the holographic model, get pushed close to the lines of
poles, indicating the Fermi surface, and this proximity destroys the full segments of the latter.
While this effect relies substantially on the particularity of the holographic framework, the
observed features are similar to the Fermi arc formation in the pseudogap phase of the doped
cuprates. |
