Počet záznamů: 1
The quark Schwinger-Dyson equation in temporal Euclidean space
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SYSNO ASEP 0338994 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The quark Schwinger-Dyson equation in temporal Euclidean space Tvůrce(i) Šauli, Vladimír (UJF-V) RID, SAI, ORCID
Batiz, Z. (PT)Zdroj.dok. Journal of Physics G-Nuclear and Particle Physics. - : Institute of Physics Publishing - ISSN 0954-3899
Roč. 36, č. 3 (2009), 035002/1-035002/13Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova ANALYTIC PERTURBATION-THEORY ; DYNAMICAL SYMMETRY-BREAKING ; BACKGROUND FIELD METHOD Vědní obor RIV BE - Teoretická fyzika CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000263259300003 DOI 10.1088/0954-3899/36/3/035002 Anotace We present an elementary non-perturbative method for obtaining Green's functions (GFs) for timelike momenta. We assume that there are no singularities in the second and fourth quadrants of the complex plane of space momentum components and perform a 3D analog of Wick rotation. This procedure defines Green's functions in a timelike Euclidean space. As an example we consider the quark propagator in QCD. While for weak coupling this method is obviously equivalent to perturbation theory, for a realistic QCD coupling a complex part of the quark mass and renormalization wavefunction has been spontaneously generated even below the standard perturbative threshold. Therefore, our method favors a confinement mechanism based on the lack of real poles. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2010
Počet záznamů: 1