Quantum field ground state of the sine-Gordon model with finite soliton density: exact results
- 1 February 1982
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 15 (2), 507-525
- https://doi.org/10.1088/0305-4470/15/2/021
Abstract
The Bethe ansatz solutions of the massive Thirring model are renormalised and used to obtain exactly the ground-state properties of the sine-Gordon model with a finite density of topological solitons. Using a theory of 1D quantum fluids, the correlation function exponents and low-energy excitation spectrum are obtained. Expansions in various limits are given, and various crossovers described.Keywords
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