✦ LIBER ✦

Perturbative and non-perturbative quarks and gluons

✍ Scribed by Martin Lavelle; David McMullan

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 426 KB
Volume: 329
Category: Article
ISSN: 0370-2693
DOI: 10.1016/0370-2693(94)90518-5

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Photon production from a thermalized qua

Photon production from a thermalized quark–gluon plasma: quantum kinetics and non-perturbative aspects

✍ D. Boyanovsky; H.J. de Vega 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 400 KB

We study the production of photons from a quark-gluon plasma in local thermal equilibrium by introducing a non-perturbative formulation of the real time evolution of the density matrix. The main ingredient is the real time effective action for the electromagnetic field to O(α em ) and to all orders

Perturbative QCD with quark and gluon co

Perturbative QCD with quark and gluon condensates

✍ Paul Hoyer 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 526 KB

The quark ψψ and gluon FµνF µν vacuum expectation values are non-vanishing at low orders in αs when the perturbative ground state includes quark and gluon pairs. This offers possibilities of studying the effects of a non-trivial vacuum using formally exact perturbative methods. The QCD Feynman rules

Non-perturbative corrections to one-gluo

Non-perturbative corrections to one-gluon exchange quark potentials

✍ J.J. Yang; H.Q. Shen; G.L. Li; T. Huang; P.N. Shen 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 570 KB

The leading non-perturbative QCD corrections to the one-gluon exchange quark-quark, quarkantiquark and qt7 pair-excitation potentials are derived by using a covariant form of non-local two-quark and two-gluon vacuum expectation values. Our numerical calculation indicates that the correction of quark

The string of variable density: Perturba

The string of variable density: Perturbative and non-perturbative results

✍ Paolo Amore 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 434 KB

Non-perturbative renormalization of the

Non-perturbative renormalization of the axial current with improved Wilson quarks

✍ R. Hoffmann; F. Knechtli; J. Rolf; R. Sommer; U. Wolff 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 275 KB

We present a new normalization condition for the axial current, which is derived from the PCAC relation with non-vanishing mass. Using this condition reduces the O(rom) corrections to the axial current normalization constant ZA for an easier chiral extrapolation in the cases, where simulations at ze

Perturbative and non-perturbative lattic

Perturbative and non-perturbative lattice calculations for the study of parton distribution

✍ Stefano Capitani 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 479 KB

We discuss how lattice calculations can be a useful tool for the study of structure functions. Particular emphasis is given to the perturbative renormalization of the operators.