Data di Pubblicazione:
2015
Citazione:
Localization of interacting fermions in the Aubry-Andre'model / V. Mastropietro. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 115:18(2015 Oct 26), pp. 180401.1-180401.5.
Abstract:
We consider interacting electrons in a one-dimensional lattice with an incommensurate Aubry-André potential in the regime when the single-particle eigenstates are localized. We rigorously establish the persistence of ground state localization in the presence of weak many-body interaction, for almost all the chemical potentials. The proof uses a quantum many-body extension of methods adopted for the stability of tori of nearly integrable Hamiltonian systems and relies on number-theoretic properties of the potential incommensurate frequency.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
V. Mastropietro
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