Phys. Rev. B 61, 7883–7886 (2000)Phase diagrams from topological transitions: The Hubbard chain with correlated hoppingReceived 30 December 1998; published in the issue dated 15 March 2000 The quantum phase diagram of the Hubbard chain with correlated hopping is accurately determined through jumps in π in the charge and spin Berry phases. The nature of each thermodynamic phase, and the existence of charge and spin gaps, is confirmed by calculating correlation functions and other fundamental quantities using numerical methods and symmetry arguments. Remarkably, we find striking similarities between the stable phases for moderate on-site Coulomb repulsion: spin Peierls, spin-density wave and triplet superconductor, and those measured in Bechgaard salts (TMTSF)2X. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.61.7883
DOI:
10.1103/PhysRevB.61.7883
PACS:
71.10.Fd, 03.65.Bz, 71.27.+a
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