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QCD with dynamical Wilson fermions. II

Gupta, Rajan and Baillie, Clive F and Brickner, Ralph G and Kilcup, Gregory W and Patel, Apoorva D and Sharpe, Stephen R (1991) QCD with dynamical Wilson fermions. II. In: Physical Review D – Particles and Fields, 44 (10). 3272 -3292.

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Official URL: http://prd.aps.org/abstract/PRD/v44/i10/p3272_1


We present results for the QCD spectrum and the matrix elements of scalar and axial-vector densities at β=6/g2=5.4, 5.5, 5.6. The lattice update was done using the hybrid Monte Carlo algorithm to include two flavors of dynamical Wilson fermions. We have explored quark masses in the range ms≤mq≤3ms. The results for the spectrum are similar to quenched simulations and mass ratios are consistent with phenomenological heavy-quark models. The results for matrix elements of the scalar density show that the contribution of sea quarks is comparable to that of the valence quarks. This has important implications for the pion-nucleon σ term.

Item Type: Journal Article
Publication: Physical Review D – Particles and Fields
Publisher: The American Physical Society
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Division of Physical & Mathematical Sciences > Centre for Theoretical Studies (Ceased to exist at the end of 2003)
Date Deposited: 30 Nov 2010 07:59
Last Modified: 30 Nov 2010 07:59
URI: http://eprints.iisc.ac.in/id/eprint/34060

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