33 citations · 67 across the 5 of their papers we have counts for
7 papers · 1 filter
Gauge Dependence in the Nonlinearly Realized Massive SU(2) Gauge Theory
Daniele Bettinelli, Ruggero Ferrari, Andrea Quadri
The implementation of the 't Hooft alpha-gauge in the symmetrically subtracted massive gauge theory based on the nonlinearly realized SU(2) gauge group is discussed. The gauge inde…
A Massive Yang-Mills Theory based on the Nonlinearly Realized Gauge Group
Daniele Bettinelli, Ruggero Ferrari, Andrea Quadri
We propose a subtraction scheme for a massive Yang-Mills theory realized via a nonlinear representation of the gauge group (here SU(2)). It is based on the subtraction of the poles…
Further Comments on the Symmetric Subtraction of the Nonlinear Sigma Model
Daniele Bettinelli, Ruggero Ferrari, Andrea Quadri
Recently a perturbative theory has been constructed, starting from the Feynman rules of the nonlinear sigma model at the tree level in the presence of an external vector source cou…
Renormalization of the Non-Linear Sigma Model in Four Dimensions. A two-loop example
Ruggero Ferrari, Andrea Quadri
The renormalization procedure of the non-linear SU(2) sigma model in D=4 proposed in hep-th/0504023 and hep-th/0506220 is here tested in a truly non-trivial case where the non-line…
A Weak Power-Counting Theorem for the Renormalization of the Non-Linear Sigma Model in Four Dimensions
Ruggero Ferrari, Andrea Quadri
The formulation of the non-linear sigma model in terms of flat connection allows the construction of a perturbative solution of a local functional equation encoding the underlying…
Endowing the Nonlinear Sigma Model with a Flat Connection Structure: a Way to Renormalization
Ruggero Ferrari
We discuss the quantized theory of a pure-gauge non-abelian vector field (flat connection) as it would appear in a mass term a` la Stueckelberg. However the paper is limited to the…