Physics – Condensed Matter
Scientific paper
1993-12-13
Phys. Rev. Lett. 73 (1994) 732
Physics
Condensed Matter
uuencoded file containing 10 pages text and 6 figures in PostScript format
Scientific paper
10.1103/PhysRevLett.73.732
The spectral properties of the 1-D Hubbard model are obtained from quantum Monte Carlo simulations using the maximum entropy method. The one-particle excitations are characterized by dispersive cosine-like bands. Velocities for spin- and charge excitations are obtained that lead to a conformal charge c=0.98 +/- 0.05 for the largest system simulated (N=84). An exact sum-rule for the spin-excitations is fulfilled accurately with deviations of at most 10% only around 2 kF.
Assaad Fakher F.
der Linden Wolfgang von
Hanke Werner
Muramatsu Alejandro
Preuss Roland
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