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Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Conference contribution/Paper › peer-review
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TY - GEN
T1 - Lattice Hamiltonian approach to the Schwinger model
T2 - The 32nd International Symposium on Lattice Field Theory
AU - Szyniszewski, Marcin
AU - Cichy, Krzysztof
AU - Kujawa-Cichy, Agnieszka
N1 - 7 pages, 6 figures, to appear in PoS(Lattice 2014)314
PY - 2014/10/28
Y1 - 2014/10/28
N2 - 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.
AB - 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.
KW - hep-lat
M3 - Conference contribution/Paper
BT - LATTICE 2014
PB - Prceedings of Science
Y2 - 23 June 2014 through 28 June 2014
ER -