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arXiv · hep-th/9611071

Single Particle Excitations in the Lattice E_8 Ising Model

Barry M. McCoy·William P. Orrick
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Abstract

We present analytic expressions for the single particle excitation energies of the 8 quasi-particles in the lattice $E_8$ Ising model and demonstrate that all excitations have an extended Brillouin zone which, depending on the excitation, ranges from 0<P < 4πto 0< P< 12 π. These are compared with exact diagonalizations for systems through size 10 and with the E_8 fermionic representations of the characters of the critical system in order to study the counting statistics.

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Barry M. McCoy, William P. Orrick. 1997-04-15. Single Particle Excitations in the Lattice E_8 Ising Model. https://doi.org/10.1016/s0375-9601(97)00197-7

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