Modified instanton profile effects from lattice Green functions

Journal Article · Wed Dec 01 00:00:00 EST 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.114503· OSTI ID:20698152

Boucaud, Ph; Le Yaouanc, A; Leroy, J P; Micheli, J; Pene, O ^[1]; Soto, F de ^[2]; Rodriguez-Quintero, J ^[3]

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1. Laboratoire de Physique Theorique, Universite de Paris XI, Batiment 210, 91405 Orsay Cedex (France)
2. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Apartado 1065, 41080 Sevilla (Spain)
3. Departamento de Fisica Aplicada, Fac. Ciencias Experimentales, Universidad de Huelva, 21071 Huelva (Spain)

We trace here instantons through the analysis of pure Yang-Mills gluon Green functions in the Landau gauge for a window of IR momenta (0.4<k<0.9 GeV). We present lattice results that can be fitted only after substituting the Belavin-Polyakov-Shvarts-Tyupkin profile in the instanton-liquid model (ILM) by one based on the Diakonov and Petrov variational methods. This also leads us to gain information on the parameters of the ILM.

• OSTI ID: 20698152
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 11; Other Information: DOI: 10.1103/PhysRevD.70.114503; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
GEV RANGE
GLUONS
GREEN FUNCTION
INSTANTONS
QUANTUM FIELD THEORY
VARIATIONAL METHODS
YANG-MILLS THEORY