Gluon condensate potentials
نویسندگان
چکیده
منابع مشابه
Gluon Condensate and Beyond
This review is based on the Sakurai prize lecture given at the Centennial Meeting of the American Physical Society (Atlanta, March 1999). The lecture was the second in the series of three talks related to the Sakurai prize 1999, and it followed Arkady Vainshtein’s summary of the discovery of the penguins . My main task was to review the QCD sum rules 2 within the context of the time when they w...
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The normalization of the gluon condensate and of renormalon-related power corrections in QCD is computed under the assumption that their “perturbative” part dominates over any eventual extra contribution from the non-trivial vacuum. The calculation is performed in the infrared finite coupling framework, assuming an infrared fixed point is present in the perturbative coupling down to low values ...
متن کاملGluon Condensate from Lattice Qcd
After making some critical comments about the traditional method of extracting the gluon condensate from lattice QCD data, I present an alternative analysis. The result is more than a factor of five larger than the phenomenological value. Two closely related subjects, the effects of the infrared renormalons on the extraction and the Lepage and Mackenzie improvement on a lattice perturbation ser...
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Finite temperature QCD can be used to describe properties of a quark-gluon plasma (QGP) possibly created in the fireball of relativistic heavy ion collisions and in the early Universe. There are two different methods available, namely lattice QCD and perturbation theory. Lattice QCD is a non-perturbative method, which can be used at all temperatures above and below the phase transition. However...
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The potential, or more generally the spectrum of a system of heavy quarks cannot be directly discussed in terms of the OPE (operator product expansion). However, one can use dispersion relations to deduce a number of sum rules relating bound state properties to quantities obtainable via the OPE (“ITEP-type” sum rules). One can then use the estimates of nonperturbative contributions to bound sta...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1983
ISSN: 0550-3213
DOI: 10.1016/0550-3213(83)90567-9