Nonperturbative calculations in the framework of variational perturbation theory in QCD
Journal Article
·
· Physics of Atomic Nuclei
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, Journal Name: Physics of Atomic Nuclei Journal Issue: 4 Vol. 80; ISSN 1063-7788; ISSN PANUEO
- Country of Publication:
- United States
- Language:
- English
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