منابع مشابه
Modelling the gluon propagator
where the subscript f denotes the finer lattice (β = 6.2 in this study) and the subscript c denotes the coarser lattice (β = 6.0). We can use this relation to study directly the scaling properties of the lattice gluon propagator by matching Talk presented by D. B. Leinweber UKQCD Collaboration the data for the two values of β. This matching can be performed by adjusting the values for the ratio...
متن کاملFit to Gluon Propagator and Gribov Formula
We report a numerical study of SU(2) lattice gauge theory in the minimal Coulomb gauge at β = 2.2 and 9 different volumes. After extrapolation to infinite volume, our fit agrees with a lattice discretization of Gribov’s formula for the transverse equal-time wouldbe physical gluon propagator, that vanishes like |k| at k = 0, whereas the free equal-time propagator (2|k|) diverges. Our fit lends r...
متن کاملConductivity close to antiferromagnetic criticality.
We study the conductivity of a three-dimensional disordered metal close to antiferromagnetic instability within the framework of the spin-fermion model using the diagrammatic technique. We calculate the interaction correction δσ(ω,T) to the conductivity, assuming that the latter is dominated by the disorder scattering, and the interaction is weak. Although the fermionic scattering rate shows cr...
متن کاملOn the Infrared Gluon Propagator
The infrared limit of the lattice Landau gauge gluon propagator is studied. We show that the lattice data is compatible with the pure power law (q2)2κ solution of the Dyson-Schwinger equations. Using various lattice volumes, the infinite volume limit for the exponent κ is measured. The value obtained, κ ∼ 0.52, supports a vanishing zero momentum gluon propagator.
متن کاملObtaining gluon propagator with Leibbrandt–Mandelstam prescription
The quantization problems of the gluon fields are investigated in the lightcone gauge, nμAμ(x) = 0, where n2 = 0. In this gauge, the gluon propagator has unphysical poles of kind 1/(nk). In order to remove these singularities, Leibbrandt and Mandelstam have proposed a new prescription. In this work we introduced a new modified lightcone gauge, which is ( nμ + iε (n∗k)k2 kμ ) Aμ = 0 where n∗μ is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 2012
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.85.034037