Sutherland, B and Römer, RA and Shastry, BS (1994) Exact Solution of a One-Dimensional Multicomponent Lattice Gas with Hyperbolic Interaction. In: Physical review letters, 73 (16). 2154 -2157 .
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We present the exact solution to a one-dimensional multicomponent quantum lattice model interacting by an exchange operator which falls off as the inverse sinh square of the distance. This interaction contains a variable range as a parameter and can thus interpolate between the known solutions for the nearest-neighbor chain and the inverse-square chain. The energy, susceptibility, charge stiffness, and the dispersion relations for low-lying excitations are explicitly calculated for the absolute ground state, as a function of both the range of the interaction and the number of species of fermions.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to The American Physical Society.|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||31 May 2011 09:06|
|Last Modified:||31 May 2011 09:06|
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