Phys. Rev. B 64, 033101 (2001) [4 pages]Single-hole spectral function and spin-charge separation in the t-J modelReceived 12 February 2001; published 11 June 2001 Worm algorithm Monte Carlo simulations of the hole Green function with subsequent spectral analysis were performed for 0.1<~J/t<~0.4 on lattices with up to L×L=32×32 sites at a temperature as low as T=J/40, and present, apparently, the hole spectral function in the thermodynamic limit. Spectral analysis reveals a δ-function-sharp quasiparticle peak at the lower edge of the spectrum that is incompatible with the power-law singularity and thus rules out the possibility of spin-charge separation in this parameter range. Spectral continuum features two peaks separated by a gap ∼4÷5 t. © 2001 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.64.033101
DOI:
10.1103/PhysRevB.64.033101
PACS:
71.10.Fd, 71.10.Pm, 74.20.Mn
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