115 citations · 193 across the 9 of their papers we have counts for
8 papers · 1 filter
Conservation laws in the continuum systems
Rudolf A. Römer, B. Sriram Shastry, B. Sutherland
We study the conservation laws of both the classical and the quantum mechanical continuum type systems. For the classical case, we introduce new integrals of motion along t…
GAPS IN THE HEISENBERG-ISING MODEL
R. A. Roemer, H. -P. Eckle, B. Sutherland
We report on the closing of gaps in the ground state of the critical Heisenberg-Ising chain at momentum . For half-filling, the gap closes at special values of the anisotropy $Δ…
Exact Solution of a One-Dimensional Multicomponent Lattice Gas with Hyperbolic Interaction
Bill Sutherland, Rudolf A. Römer, B. Sriram Shastry
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 distan…
Transport Properties of a One-Dimensional Two-Component Quantum Liquid with Hyperbolic Interactions
Rudolf A. Römer, Bill Sutherland
We present an investigation of the sinh-cosh (SC) interaction model with twisted boundary conditions. We argue that, when unlike particles repel, the SC model may be usefully viewe…
Critical Exponents for the SC-Model in the Zero Sector
Rudolf A. Römer, Bill Sutherland
In this paper, we continue our investigation of a one-dimensional, two-component, quantum many-body system in which like particles interact with a pair potential $s(s+1)/{\rm sinh}…
Exiton, Spinon and Spin Wave Modes in an Exactly Soluble One-Dimensional Quantum Many-Body System
Bill Sutherland, Rudolf A. R"omer
In this paper, we present the exact solution to a one-dimensional, two-component, quantum many-body system in which like particles interact with a pair potential $s(s+1)/{\rm sinh}…
Solution of Some Integrable One-Dimensional Quantum Systems
Bill Sutherland, B. Sriram Shastry
In this paper, we investigate a family of one-dimensional multi-component quantum many-body systems. The interaction is an exchange interaction based on the familiar family of inte…
Test of Conformal Invariance in One-Dimensional Quantum Liquid with Long-Range Interaction
Rudolf A. Römer, Bill Sutherland
We numerically study the momentum distribution of one-dimensional Bose and Fermi systems with long-range interaction for the ``special'' values , sin…