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Type: Journal article
Title: Center vortices and the quark propagator in SU(2) gauge theory
Author: Bowman, P.
Langfeld, K.
Leinweber, D.
Cass, A.
Sternbeck, A.
Von Smekal, L.
Williams, A.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2008; 78(5):054509-1-054509-7
Publisher: American Physical Soc
Issue Date: 2008
ISSN: 1550-7998
Statement of
Patrick O. Bowman, Kurt Langfeld, Derek B. Leinweber, Alan O' Cais, Andre Sternbeck, Lorenz von Smekal and Anthony G. Williams
Abstract: We study the behavior of the AsqTad quark propagator in Landau gauge on quenched SU(2) gauge configurations under the removal of center vortices. In contrast to recent results in SU(3), we clearly see the infrared enhancement of the mass function disappear if center vortices are removed, a sign of the intimate relation between center vortices and chiral symmetry breaking in SU(2) gauge-field theory. These results provide a benchmark with which to interpret the SU(3) results. In addition, we consider vortex-only configurations. On those, the quark dressing function behaves roughly as on the full configurations, and the mass function picks up an almost linear momentum dependence.
Rights: ©2008 American Physical Society
RMID: 0020083132
DOI: 10.1103/PhysRevD.78.054509
Appears in Collections:Chemistry and Physics publications

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