Single hole dynamics in the one dimensional t-J model

Details Single hole dynamics in the one dimensional t-J model Single hole dynamics in the one dimensional t-J model

1999-04-12

arxiv.org/abs/cond-mat/9904150v1

Eur. Phys. J B 16, 209-212 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

8 pages, 5 figures

Scientific paper

10.1007/s100510070220

We present a new finite-temperature quantum Monte Carlo algorithm to compute imaginary-time Green functions for a single hole in the t-J model on non-frustrated lattices. Spectral functions are then obtained with the Maximum Entropy method. Simulations of the one-dimensional case show that a simple charge-spin separation Ansatz is able to describe the overall features of the spectral function over the whole energy range for values of J/t from 1/3 to 4. This includes the bandwidth W \sim 4t + J and the compact support of the spectral function. The quasiparticle weight Z_k is computed on lattices up to L=96 sites, and scales as Z_k\propto L^{-1/2}.

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