Results 11 to 20 of about 2,214 (215)
Dimensional regularization vs methods in fixed dimension with and without γ 5
We study the Lorentz and Dirac algebra, including the antisymmetric ϵ tensor and the γ 5 matrix, in implicit gauge-invariant regularization/renormalization methods defined in fixed integer dimensions.
A. M. Bruque +2 more
doaj +2 more sources
Universality in the Exact Renormalization Group: Comparison to Perturbation Theory [PDF]
Various formulations of the exact renormalization group can be compared in the perturbative domain, in which we have reliable expressions for regularization-independent (universal) quantities.
José Gaite
doaj +2 more sources
Self-renormalization of quasi-light-front correlators on the lattice [PDF]
In applying large-momentum effective theory, renormalization of the Euclidean correlators in lattice regularization is a challenge due to linear divergences in the self-energy of Wilson lines.
Yi-Kai Huo +12 more
doaj +2 more sources
Renormalization of the pseudoscalar operator at four loops in QCD
We present the renormalization constant of the pseudoscalar operator defined with a non-anticommuting γ 5 in dimensional regularization up to four-loop order in perturbative Quantum Chromodynamics (QCD).
Long Chen +2 more
doaj +3 more sources
Regularization, renormalization, and renormalization groups
This paper confronts renormalization used in quantum field theory and that used in critical phenomena studies in statistical mechanics or dynamical systems theory. Regularization that cures spurious divergences is distinguished from renormalization transformations allowing to compute actual physical divergences.
Lesne, Annick
openaire +2 more sources
Leading all-loop quantum contribution to the effective potential in general scalar field theory
The RG equation for the effective potential in the leading log (LL) approximation is constructed which is valid for an arbitrary scalar field theory in 4 dimensions.
D. I. Kazakov +2 more
doaj +1 more source
Higher logarithms and ε-poles for the MS-like renormalization prescriptions
We consider a version of dimensional regularization (reduction) in which the dimensionful regularization parameter Λ is in general different from the renormalization scale μ.
N. P. Meshcheriakov +2 more
doaj +1 more source
Towards general scalar-Yukawa renormalisation group equations at three-loop order
For arbitrary four-dimensional quantum field theories with scalars and fermions, renormalisation group equations in the MS ¯ $$ \overline{\mathrm{MS}} $$ scheme are investigated at three-loop order in perturbation theory.
Tom Steudtner
doaj +1 more source
This review provides a detailed introduction to chiral gauge theories, renormalization theory, and the application of dimensional regularization with the non-anticommuting BMHV scheme for γ5.
Dominik Stöckinger +5 more
core +1 more source
Asymptotic freedom and higher derivative gauge theories
The ultraviolet completion of gauge theories by higher derivative terms can dramatically change their behavior at high energies. The requirement of asymptotic freedom imposes very stringent constraints that are only satisfied by a small family of higher ...
M. Asorey, F. Falceto, L. Rachwał
doaj +1 more source

