Integrability and coherence of hopping between 1D correlated electrons systems

Abstract

We present numerical evidence that the hopping of electrons between chains described by the $t-J$ model is coherent in the integrable cases ($J=0$ and $J=2$) and essentially incoherent otherwise. This effect is {\it not} related to the value of the exponent $\alpha$, (which is restricted to the interval [0,1/8] when $0\le J\le 2$), and we propose that enhanced coherence is characteristic of integrable systems.

9 pages, LateX, 4 figures in uuencoded format, submitted to Phys. Rev. Lett

References in corpus (5)

• Integrability and ideal conductance at finite temperatures
• Poisson versus GOE statistics in integrable and non-integrable quantum hamiltonian
• Pairing and Excitation Spectrum in doped t-J Ladders
• Evidence for a superfluid density in t--J ladders
• Scaling Properties of the Two-Chain Model

Cited by in corpus (8)

• Quenches in quantum many-body systems: One-dimensional Bose-Hubbard model reexamined
• Confined Coherence in Strongly Correlated Anisotropic Metals
• Ladder operator for the one-dimensional Hubbard model
• Out-of-equilibrium Correlated Systems : Bipartite Entanglement as a Probe of Thermalization
• Confinement and transverse conductivity in coupled Luttinger liquids
• Universal scaling behavior of coupled chains of interacting fermions
• One particle interchain hopping in coupled Hubbard chains
• Spin-Charge Separation, Anomalous Scaling and the Coherence of Hopping in exactly solved Two Chain Models