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Three loop MSbar renormalization of the Curci-Ferrari model and the dimension two BRST invariant composite operator in QCD

Gracey, J.A. (2003) Three loop MSbar renormalization of the Curci-Ferrari model and the dimension two BRST invariant composite operator in QCD. Physics Letters B, 552 (1-2). pp. 101-110. ISSN 0370-2693

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Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Abstract

The massless Curci-Ferrari model with N_f flavours of quarks is renormalized to three loops in the MSbar scheme in an arbitrary covariant gauge with parameter alpha. The renormalization of the BRST invariant dimension two composite operator, 1/2 (A^a_\mu)^2 - alpha \bar{c}^a c^a, which corresponds to the mass operator in the massive Curci-Ferrari model, is determined by renormalizing the Green's function where the operator is inserted in a ghost two-point function. Consequently the anomalous dimension of the QCD Landau gauge operator, 1/2 (A^a_\mu)^2, and the (gauge independent) photon mass anomalous dimension in QED are both deduced at three loops.

Item Type:Article
Additional Information:LTH 565. arXiv Number: arXiv:hep-th/0211144v1. Available online 3 December 2002. Issue: 16 January 2003.
Uncontrolled Keywords:QUANTUM-FIELD THEORY; YANG-MILLS THEORIES; GAUGE-THEORIES; MASS-GAP; REGULARIZATION; CONDENSATE; GENERATION
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1016/S0370-2693(02)03077-0
Related URLs:
Refereed:No
Status:Published
ID Code:530
Deposited On:19 Aug 2008 14:32
Last Modified:19 May 2011 10:12

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