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Phys. Rev. D 57, 4471–4474 (1998)

Estimates of higher-dimensional vacuum condensates from the instanton vacuum

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M. V. Polyakov* and C. Weiss
Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, Germany

Received 18 November 1997; published in the issue dated 1 April 1998

We calculate the values of nonfactorizable dimension-7 vacuum condensates in the instanton vacuum. We compare our results with results of a method, recently proposed by Oganesian, in which the dimension-7 condensates are estimated by factorization of dimension-10 condensates in various inequivalent ways. The instanton estimates can be used to analyze the stability of QCD sum rules with increasing dimensions.

© 1998 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevD.57.4471
DOI:
10.1103/PhysRevD.57.4471
PACS:
12.38.Lg, 11.15.Kc, 11.15.Pg, 14.20.Dh

*Permanent address: Petersburg Nuclear Physics Institute, Gatchina, St. Petersburg 188350, Russia.