Finite-lattice methods in quantum Hamiltonian field theory. I. The Ising model
- 1 January 1981
- journal article
- Published by IOP Publishing in Journal of Physics A: General Physics
- Vol. 14 (1), 241-257
- https://doi.org/10.1088/0305-4470/14/1/024
Abstract
A finite-size scaling formalism is outlined for quantum Hamiltonian field theory on a lattice. The scaling behaviour in the neighbourhood of a critical point is predicted. To test the theory, exact results are generated for the mass gap specific heat and susceptibility of the (1+1)-dimensional Ising model on a finite lattice. Finite-size scaling methods give results for the critical parameters which are comparable in accuracy with those obtained by standard perturbation series analysis methods.Keywords
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