1997/06/11 by P. Schmitteckert, Peter Schmitteckert, T. Schulze +5 · 8 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum many-body systems #cond-mat.dis-nn #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.80.560
published as Phys. Rev. Lett. 80, 560 (1998) · 5 pages, 6 figures, revtex
arxiv created 1997/06/11 · openalex publication_date 1998/01/19 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Using the density matrix renormalization group algorithm, we investigate the lattice model for spinless fermions in one dimension in the presence of a strong interaction and disorder. The phase sensitivity of the ground state energy is determined with high accuracy for systems up to a size of 60 lattice constants. This quantity is found to be log normally distributed. The fluctuations grow algebraically with system size with a universal exponent of \ensuremath≈2/3 in the localized region of the phase diagram. Surprisingly we find, for an attractive interaction, a delocalized phase of finite extension. The boundary of this delocalized phase is determined.