Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Statut Confirmé
Domaines hep-th
Date Mardi 18 Juin 2019
Heure 14:00
Institut CPHT
Salle Salle Louis Michel, CPHT, Ecole Polytechnique
Nom de l'orateur Krikun
Prenom de l'orateur Alexander
Addresse email de l'orateur
Institution de l'orateur Leiden University
Titre Isolated zeros destroy segments of Fermi surface in holographic models with lattice
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.
Numéro de preprint arXiv
Commentaires Joint CMT and String Theory Seminar
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