Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Bettinelli, Daniele"'
The formulation of a grand unified field theory based on the nonlinearly realized SU(5) gauge group is presented. The tree-level action is constructed by requiring invariance under local left SU(5) gauge transformations, the existence of a weak power
Externí odkaz:
http://arxiv.org/abs/1210.1486
Autor:
Bettinelli, Daniele, Ferrari, Ruggero
Publikováno v:
Acta Phys. Polon. B 44 (2013) 177
For small values of the gauge coupling constant, we compare the densities of the energy of the vacuum and of the order parameter, evaluated in the lattice Monte Carlo simulation and in the perturbative field theory at two loop (Minkowski). The contin
Externí odkaz:
http://arxiv.org/abs/1209.4834
Publikováno v:
PoS(RADCOR2009)064
A consistent strategy for the subtraction of the divergences in the nonlinearly realized Electroweak Model in the loop expansion is presented. No Higgs field enters into the perturbative spectrum. The local functional equation (LFE), encoding the inv
Externí odkaz:
http://arxiv.org/abs/1001.2423
Publikováno v:
Phys.Rev.D79:125028,2009
We evaluate at one loop the self-energies in generic D dimensions for the W,Z mesons in the Electroweak model where the gauge group is nonlinearly realized. In this model the Higgs boson parameters are absent, while a second mass parameter appears to
Externí odkaz:
http://arxiv.org/abs/0903.0281
Publikováno v:
Acta Phys.Polon.B41:597-628,2010
In the present paper, that is the second part devoted to the construction of an electroweak model based on a nonlinear realization of the gauge group SU(2) X U(1), we study the tree-level vertex functional with all the sources necessary for the funct
Externí odkaz:
http://arxiv.org/abs/0809.1994
Publikováno v:
Int.J.Mod.Phys.A24:2639-2654,2009
The electroweak model is formulated on the nonlinearly realized gauge group SU(2) X U(1). This implies that in perturbation theory no Higgs field is present. The paper provides the effective action at the tree level, the Slavnov Taylor identity (nece
Externí odkaz:
http://arxiv.org/abs/0807.3882
Publikováno v:
J.General.Lie Theor.Appl.2:122-126,2008
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 independence of the self-mass of the gauge bosons is proven by cohomologic
Externí odkaz:
http://arxiv.org/abs/0712.1410
Publikováno v:
Phys.Rev.D77:105012,2008
In this paper we evaluate the self-energy of the vector mesons at one loop in our recently proposed subtraction scheme for massive nonlinearly realized SU(2) Yang-Mills theory. We check the fulfillment of physical unitarity. The resulting self-mass c
Externí odkaz:
http://arxiv.org/abs/0709.0644
Publikováno v:
Phys.Rev.D77:045021,2008
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 in D-4 of the amplitudes, in dimensional regularization, after a suit
Externí odkaz:
http://arxiv.org/abs/0705.2339
Publikováno v:
JHEP 0703:065,2007
The technical problem of deriving the full Green functions of the elementary pion fields of the nonlinear sigma model in terms of ancestor amplitudes involving only the flat connection and the nonlinear sigma model constraint is a very complex task.
Externí odkaz:
http://arxiv.org/abs/hep-th/0701212