info:eu-repo/semantics/article
Comment on "study of counterintuitive transport properties in the Aubry-André-Harper model via entanglement entropy and persistent current"
Fecha
2020-05-15Registro en:
Fernández, Francisco Marcelo; Alcoba, Diego Ricardo; Torre, Alicia; Lain, Luis; Oña, Ofelia Beatriz; et al.; Comment on "study of counterintuitive transport properties in the Aubry-André-Harper model via entanglement entropy and persistent current"; American Physical Society; Physical Review B; 101; 19; 15-5-2020; 1-4
2469-9950
2469-9969
CONICET Digital
CONICET
Autor
Fernández, Francisco Marcelo
Alcoba, Diego Ricardo
Torre, Alicia
Lain, Luis
Oña, Ofelia Beatriz
Ríos, Elías Daniel
Resumen
In a recent study of the transport properties in the Aubry-André-Harper model [Phys. Rev. B 100, 195143 (2019)], the authors point out the failure of the Hellmann-Feynman theorem (HFT) in the case of degenerate states. They try to support such a statement from earlier papers that prove exactly the opposite. It appears that the application of the HFT to degenerate states has not been well understood. For this reason, in this Comment we illustrate the correct application of the HFT to the model just mentioned.