Series expansions for the massive Schwinger model in Hamiltonian lattice theory

It is shown that detailed and accurate information about the mass spectrum of the massive Schwinger model can be obtained using the technique of strong-coupling series expansions. Extended strong-coupling series for the energy eigenvalues are calculated and extrapolated to the continuum limit by mea...

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Veröffentlicht in:	Physical Review, D D, 1997-07, Vol.56 (1), p.55-67
Hauptverfasser:	Hamer, C. J., Weihong, Zheng, Oitmaa, J.
Format:	Artikel
Sprache:	eng
Schlagworte:	EIGENVALUES FERMIONS HAMILTONIANS LATTICE FIELD THEORY MASS SPECTRA NUMERICAL ANALYSIS PHYSICS SERIES EXPANSION SPIN STRONG-COUPLING MODEL
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creator	Hamer, C. J. Weihong, Zheng Oitmaa, J.
description	It is shown that detailed and accurate information about the mass spectrum of the massive Schwinger model can be obtained using the technique of strong-coupling series expansions. Extended strong-coupling series for the energy eigenvalues are calculated and extrapolated to the continuum limit by means of integrated differential approximants, which are matched onto a weak-coupling expansion. The numerical estimates are compared with exact results and finite-lattice results calculated for an equivalent lattice spin model with long-range interactions. Both the heavy fermion and the light fermion limits of the model are explored in some detail. {copyright} {ital 1997} {ital The American Physical Society}
doi_str_mv	10.1103/PhysRevD.56.55
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J.</creatorcontrib><creatorcontrib>Weihong, Zheng</creatorcontrib><creatorcontrib>Oitmaa, J.</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Physical Review, D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hamer, C. J.</au><au>Weihong, Zheng</au><au>Oitmaa, J.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Series expansions for the massive Schwinger model in Hamiltonian lattice theory</atitle><jtitle>Physical Review, D</jtitle><date>1997-07-01</date><risdate>1997</risdate><volume>56</volume><issue>1</issue><spage>55</spage><epage>67</epage><pages>55-67</pages><issn>0556-2821</issn><eissn>1089-4918</eissn><abstract>It is shown that detailed and accurate information about the mass spectrum of the massive Schwinger model can be obtained using the technique of strong-coupling series expansions. 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subjects	EIGENVALUES FERMIONS HAMILTONIANS LATTICE FIELD THEORY MASS SPECTRA NUMERICAL ANALYSIS PHYSICS SERIES EXPANSION SPIN STRONG-COUPLING MODEL
title	Series expansions for the massive Schwinger model in Hamiltonian lattice theory
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