Lattice Hamiltonian approach to the massless Schwinger model:precise extraction of the mass gap

Cichy, Krzysztof and Kujawa-Cichy, Agnieszka and Szyniszewski, Marcin (2013) Lattice Hamiltonian approach to the massless Schwinger model:precise extraction of the mass gap. Computer Physics Communications, 184 (7). pp. 1666-1672. ISSN 0010-4655

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Abstract

We present results of applying the Hamiltonian approach to the massless Schwinger model. A finite basis is constructed using the strong coupling expansion to a very high order. Using exact diagonalization, the continuum limit can be reliably approached. This allows to reproduce the analytical results for the ground state energy, as well as the vector and scalar mass gaps to an outstanding precision better than 10^−6%.

Item Type: Journal Article
Journal or Publication Title: Computer Physics Communications
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 65503
Deposited By: ep_importer_pure
Deposited On: 05 Jul 2013 12:26
Refereed?: Yes
Published?: Published
Last Modified: 15 Jan 2020 07:39
URI: https://eprints.lancs.ac.uk/id/eprint/65503

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