Gluon condensate and effective linear potential
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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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 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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Under assumption of singular behavior of αs(q ) at q ≃ 0 and of large q behavior, corresponding to the perturbation theory up to four loops, a procedure is considered of matching the β-function at a boundary of perturbative and non-perturbative regions. The contribution of the non-perturbative region to the gluon condensate is calculated with varying normalization condition αs(m 2 τ ) = 0.29, 0...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1987
ISSN: 0370-2693
DOI: 10.1016/0370-2693(87)90863-x