Zobrazeno 1 - 10
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pro vyhledávání: '"Buric, M."'
We study quantization of a gauge analogon of the Grosse-Wulkenhaar model: we find divergent one-loop contributions to the 1-point and 2-point Green functions. We obtain that five counterterms are necessary for renormalization and that all divergences
Externí odkaz:
http://arxiv.org/abs/1203.3016
Publikováno v:
Phys.Rev.D83:045023,2011
We analyze quantization of noncommutative chiral electrodynamics in the enveloping algebra formalism in linear order in noncommutativity parameter $\theta$. Calculations show that divergences exist and cannot be removed by ordinary renormalization, h
Externí odkaz:
http://arxiv.org/abs/1009.4603
Autor:
Buric, M., Wohlgenannt, M.
Publikováno v:
JHEP 1003:053,2010
We define a two-dimensional noncommutative space as a limit of finite-matrix spaces which have space-time dimension three. We show that on such space the Grosse-Wulkenhaar (renormalizable) action has natural interpretation as the action for the scala
Externí odkaz:
http://arxiv.org/abs/0902.3408
Publikováno v:
SFIN.a1:159,2007
In this paper we construct a version of the standard model gauge sector on noncommutative space-time which is one-loop renormalizable to first order in the expansion in the noncommutativity parameter $\theta$.
Comment: 12 pages,Talk delivered by
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Externí odkaz:
http://arxiv.org/abs/0711.2788
Publikováno v:
Phys.Rev.D77:045031,2008
In this paper we show that in the noncommutative chiral gauge theories the 4-fermion vertices are finite. The $4\psi$-vertices appear in linear order in quantization of the $\theta$-expanded noncommutative gauge theories; in all previously considered
Externí odkaz:
http://arxiv.org/abs/0711.0887
Publikováno v:
Eur.Phys.J.C55:489-498,2008
Consider the quasi-commutative approximation to a noncommutative geometry. It is shown that there is a natural map from the resulting Poisson structure to the Riemann curvature of a metric. This map is applied to the study of high-frequency gravitati
Externí odkaz:
http://arxiv.org/abs/0709.3159
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 framew
Externí odkaz:
http://arxiv.org/abs/hep-ph/0611299
Publikováno v:
JHEP0604:054,2006
A gravitational field can be defined in terms of a moving frame, which when made noncommutative yields a preferred basis for a differential calculus. It is conjectured that to a linear perturbation of the commutation relations which define the algebr
Externí odkaz:
http://arxiv.org/abs/hep-th/0603044
Autor:
Buric, M., Madore, J.
Publikováno v:
Phys.Lett. B622 (2005) 183-191
The noncommutative extension of a dynamical 2-dimensional space-time is given and some of its properties discussed. Wick rotation to euclidean signature yields a surface which has as commutative limit the doughnut but in a singular limit in which the
Externí odkaz:
http://arxiv.org/abs/hep-th/0507064
Autor:
Buric, M., Madore, J.
A review is given of some 2-dimensional metrics for which noncommutative versions have been found. They serve partially to illustrate a noncommutative extension of the moving-frame formalism. All of these models suggest that there is an intimate rela
Externí odkaz:
http://arxiv.org/abs/hep-th/0406232