منابع مشابه
Yang-Mills Propagators and QCD ∗
We present a strong coupling expansion that permits to develop analysis of quantum field theory in the infrared limit. Application to a quartic massless scalar field gives a massive spectrum and the propagator in this regime. We extend the approach to a pure Yang-Mills theory obtaining analogous results. The gluon propagator is compared satisfactorily with lattice results and similarly for the ...
متن کاملLarge volume behaviour of Yang-Mills propagators
We summarise results on finite-volume effects in the propagators of Landau gauge Yang-Mills theory using Dyson-Schwinger equations on a 4-dimensional torus. We demonstrate explicitly how the solutions for the gluon and the ghost propagator tend towards their respective infinite volume forms in the corresponding limit. We discuss the relation of our solutions with results from lattice Monte-Carl...
متن کاملRenormalization flow of Yang-Mills propagators
We study Landau-gauge Yang-Mills theory by means of a nonperturbative vertex expansion of the quantum effective action. Using an exact renormalization group equation, we compute the fully dressed gluon and ghost propagators to lowest nontrivial order in the vertex expansion. In the mid-momentum regime, p2 ∼ O(1)GeV, we probe the propagator flow with various ansätze for the threeand four-point c...
متن کاملComparing Pure Yang-mills Su(2) and Su(3) Propagators
The infrared behavior of gluon and ghost propagators in Yang-Mills gauge theories is of central importance for the understanding of confinement in QCD. While analytic studies using Schwinger-Dyson equations predict the same infrared exponents for the SU(2) and SU(3) gauge groups, lattice simulations usually assume that the two cases are different, although their qualitative infrared features ma...
متن کاملMHV Lagrangians for Yang–Mills and QCD
Faculty of Engineering, Science and Mathematics School of Physics and Astronomy Doctor of Philosophy
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2009
ISSN: 0920-5632
DOI: 10.1016/j.nuclphysbps.2008.12.058