1993/03/01 by C. Stephen Hellberg, E. J. Mele, E. J. Melé · 53 citations
Mathematics · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Correlation function (quantum field theory) #Dimension (graph theory) #Ground state #Instability #Luttinger liquid #Mathematics #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #cond-mat
paper · pdf · doi:10.1103/physrevb.48.646
published in Physical review. B, Condensed matter 48(1), 646-649 (American Physical Society) · REVTEX, 11 pages. 4 Figures available on request from [email protected]
arxiv created 1993/03/01 · openalex publication_date 1993/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the t-J model in one dimension by numerically projecting the true ground state from a Luttinger-liquid trial wave function. We find the model exhibits Luttinger-liquid behavior for most of the phase diagram in which interaction strength and density are varied. However, at small densities and high interaction strengths a new phase with a gap to spin excitations and enhanced superconducting correlations is found. We show that this phase is a Luther-Emery liquid and study its correlation functions.