Exact solution of a one-dimensional multicomponent lattice gas with hyperbolic interaction

Sutherland, Bill ; Römer, Rudolf A. ; Sriram Shastry, B. (1994) Exact solution of a one-dimensional multicomponent lattice gas with hyperbolic interaction Physical Review Letters, 73 (16). pp. 2154-2157. ISSN 0031-9007

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Official URL: http://prl.aps.org/abstract/PRL/v73/i16/p2154_1

Related URL: http://dx.doi.org/10.1103/PhysRevLett.73.2154

Abstract

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:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:51273
Deposited On:28 Jul 2011 07:18
Last Modified:18 May 2016 05:17

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