Scaling behavior and positivity violation of the gluon propagator in full QCD
Files
(Published version)
Date
2007
Authors
Bowman, P.
Heller, U.
Leinweber, D.
Parappilly, M.
Sternbeck, A.
Von Smekal, L.
Williams, A.
Zhang, J.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Journal article
Citation
Physical Review D: Particles, Fields, Gravitation and Cosmology, 2007; 76(9):094505-1-094505-7
Statement of Responsibility
Patrick O. Bowman, Urs M. Heller, Derek B. Leinweber, Maria B. Parappilly, André Sternbeck, Lorenz von Smekal, Anthony G. Williams and Jianbo Zhang
Conference Name
Abstract
The Landau-gauge gluon propagator is studied using the coarse and fine dynamical MILC configurations. The effects of dynamical quarks are clearly visible and lead to a reduction of the nonperturbative infrared enhancement relative to the quenched case. Lattice spacing effects are studied and found to be small. The gluon spectral function is shown to clearly violate positivity in both quenched and full QCD.
School/Discipline
Dissertation Note
Provenance
Description
Access Status
Rights
©2007 American Physical Society