Localization induced by spatially uncorrelated subohmic baths in one dimension - CEA - Université Paris-Saclay Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2023

Localization induced by spatially uncorrelated subohmic baths in one dimension

Résumé

We study an incommensurate XXZ spin chain coupled to a collection of local harmonic baths. At zero temperature, by varying the strength of the coupling to the bath the chain undergoes a quantum phase transition between a Luttinger liquid phase and a spin density wave (SDW). As opposed to the standard mechanism, the SDW emerges in the absence of the opening of a gap, but it is due to ``fractional excitations" induced by the bath. We also show, by computing the DC conductivity, that the system is insulating in the presence of a subohmic bath. We interpret this phenomenon as localization induced by the bath à la Caldeira and Leggett.
Fichier principal
Vignette du fichier
PhysRevB.108.205138.pdf (756.26 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
licence : CC BY - Paternité

Dates et versions

hal-04174919 , version 1 (22-04-2024)

Identifiants

Citer

Saptarshi Majumdar, Laura Foini, Thierry Giamarchi, Alberto Rosso. Localization induced by spatially uncorrelated subohmic baths in one dimension. Physical Review B, 2023, 108 (20), pp.205138. ⟨10.1103/PhysRevB.108.205138⟩. ⟨hal-04174919⟩
16 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More