Nonperturbative calculations in the framework of variational perturbation theory in QCD

Journal Article · Sat Jul 15 00:00:00 EDT 2017 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778817040263· OSTI ID:22759662

Solovtsova, O. P., E-mail: [e-mail] ^[1]

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1. Russia Gomel State Technical University, Joint Institute for Nuclear Research, Dubna (Belarus)

We discuss applications of the method based on the variational perturbation theory to perform calculations down to the lowest energy scale. The variational series is different from the conventional perturbative expansion and can be used to go beyond the weak-coupling regime. We apply this method to investigate the Borel representation of the light Adler function constructed from the τ data and to determine the residual condensates. It is shown that within the method suggested the optimal values of these lower dimension condensates are close to zero.

• OSTI ID: 22759662
• Journal Information: Physics of Atomic Nuclei, Vol. 80, Issue 4; Other Information: Copyright (c) 2017 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONDENSATES
COUPLING
PERTURBATION THEORY
QUANTUM CHROMODYNAMICS
VARIATIONAL METHODS