arXiv subjects

D. Latas

Publications and source records attributed to D. Latas.

3 recordsLinked to original sources

arXiv2011

Chiral fermions in noncommutative electrodynamics: renormalizability and dispersion

We analyze quantization of noncommutative chiral electrodynamics in the enveloping algebra formalism in linear order in noncommutativity parameter $θ$. Calculations show that divergences exist and cannot be removed by ordinary renormalization, however they can be removed by the Seiberg-Witten redefinition of fields. Performing the redefinitions explicitly, we obtain renormalizable lagrangian and discuss the influence of noncommutativity on field propagation. Noncommutativity affects the propagation of chiral fermions only: half of the fermionic modes become massive and birefringent.

hep-th↗

arXiv2007

The absence of the 4$ψ$ divergence in noncommutative chiral models

In this paper we show that in the noncommutative chiral gauge theories the 4-fermion vertices are finite. The $4ψ$-vertices appear in linear order in quantization of the $θ$-expanded noncommutative gauge theories; in all previously considered models, based on Dirac fermions, the $4ψ$-vertices were divergent and nonrenormalizable.

hep-th↗

arXiv2007

Improved Z -> gamma gamma decay in the renormalizable gauge sector of the noncommutative standard model

In this work we propose the Z -> gamma gamma decay as a process strictly forbidden in the standard model, suitable for the search of noncommutativity of coordinates at very short distances. We computed the Z -> gamma gamma partial width in the framework of the recently proposed one-loop renormalizable gauge sector of the noncommutative standard model. New experimental possibilities at LHC are analyzed and a firm bound to the scale of noncommutativity parameter is set around 1 TeV.

hep-ph↗