General theory of propagators
نویسندگان
چکیده
منابع مشابه
Propagators of 2d Landau-gauge Yang-Mills theory
In two-dimensional Yang-Mills theory many quantities can be determined exactly. In particular, no propagating modes exist, and thus the theory is perfectly confining. It is also related to topological field theories [1]. In Landau gauge, this is manifest already in perturbation theory, where one has an explicit version of Kugo-Ojima confinement by the quartet mechanism [2]. On the other hand, t...
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It is shown that Weyl spinors in 4D Minkowski space are composed of primary fields of half–integer conformal weights. This yields representations of fermionic 2–point functions in terms of correlators of primary fields with a factorized transformation behavior under the Lorentz group. I employ this observation to determine the general structure of the corresponding Lorentz covariant correlators...
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The theoretical treatment of cycle-effects on total pi-electron energy, mainly elaborated by Nenad Trinajstic and his research group, is re-stated in a general and more formal manner. It enables to envisage several other possible ways of measuring the cycle-effects and points at further directions of research.
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Green’s functions are gauge-dependent quantities. Thus, the manifestation of confinement in these correlation functions also depends on the gauge. Here we use lattice gauge theory to study the gluon and the ghost propagators in a gauge (the so-called λ -gauge) interpolating between the Landau and the Coulomb gauge. Results are compared to the usual minimal Landau gauge.
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Recent progress in the formulation of chiral fermions on the lattice makes it possible to approach the regime of the physical light quark masses. However, lattice volumes V = L needed to ensure negligible finite size effects are prohibitively large for such light quarks. Only when L is very large compared to the Compton wavelength of the lightest particles of the theory (i.e. the pions) are the...
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ژورنال
عنوان ژورنال: Il Nuovo Cimento
سال: 1955
ISSN: 0029-6341,1827-6121
DOI: 10.1007/bf02731414