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  • 1410.7597v2

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Lattice Hamiltonian approach to the Schwinger model: further results from the strong coupling expansion

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Publication date28/10/2014
Host publicationLATTICE 2014
PublisherPrceedings of Science
Number of pages7
<mark>Original language</mark>English
EventThe 32nd International Symposium on Lattice Field Theory - Columbia University, New York, United States
Duration: 23/06/201428/06/2014

Symposium

SymposiumThe 32nd International Symposium on Lattice Field Theory
Country/TerritoryUnited States
CityNew York
Period23/06/1428/06/14

Symposium

SymposiumThe 32nd International Symposium on Lattice Field Theory
Country/TerritoryUnited States
CityNew York
Period23/06/1428/06/14

Abstract

We employ exact diagonalization with strong coupling expansion to the massless and massive Schwinger model. New results are presented for the ground state energy and scalar mass gap in the massless model, which improve the precision to nearly 10^-9 %. We also investigate the chiral condensate and compare our calculations to previous results available in the literature. Oscillations of the chiral condensate which are present while increasing the expansion order are also studied and are shown to be directly linked to the presence of flux loops in the system.

Bibliographic note

7 pages, 6 figures, to appear in PoS(Lattice 2014)314