Integrability and coherence of hopping between 1D correlated electrons systems

Details Integrability and coherence of hopping between 1D correlated electrons systems Integrability and coherence of hopping between 1D correlated electrons systems

1995-08-10

arxiv.org/abs/cond-mat/9508033v1

Physics

Condensed Matter

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

Scientific paper

10.1103/PhysRevLett.76.287

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.

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