Electron Addition Spectrum in the Supersymmetric tJ Model with InverseSquare Interaction
Abstract
The electron addition spectrum A^{+}\(k,ω\) is obtained analytically for the onedimensional (1D) supersymmetric tJ model with 1/r^{2} interaction. The result is obtained first for a smallsized system and its validity is checked against the numerical calculation. Then the general expression is found which is valid for arbitrary size of the system. The thermodynamic limit of A^{+}\(k,ω\) has a simple analytic form with contributions from one spinon, one holon, and one antiholonall of which obey fractional statistics. The upper edge of A^{+}\(k,ω\) in the \(k,ω\) plane includes a deltafunction peak which reduces to that of the singleelectron band in the lowdensity limit.
 Publication:

Physical Review Letters
 Pub Date:
 April 2001
 DOI:
 10.1103/PhysRevLett.86.3096
 arXiv:
 arXiv:condmat/0102333
 Bibcode:
 2001PhRvL..86.3096A
 Keywords:

 Condensed Matter  Strongly Correlated Electrons;
 Condensed Matter  Statistical Mechanics
 EPrint:
 5 pages, 1 figure, accepted for publication in Phys. Rev. Lett