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Type: Journal article
Title: Scaling behavior and positivity violation of the gluon propagator in full QCD
Author: Bowman, P.
Heller, U.
Leinweber, D.
Parappilly, M.
Sternbeck, A.
Von Smekal, L.
Williams, A.
Zhang, J.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2007; 76(9):094505-1-094505-7
Publisher: American Physical Soc
Issue Date: 2007
ISSN: 1550-7998
Statement of
Patrick O. Bowman, Urs M. Heller, Derek B. Leinweber, Maria B. Parappilly, André Sternbeck, Lorenz von Smekal, Anthony G. Williams and Jianbo Zhang
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.
Rights: ©2007 American Physical Society
RMID: 0020073866
DOI: 10.1103/PhysRevD.76.094505
Appears in Collections:Chemistry and Physics publications

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