Naslov
A twisted look on kappa-Minkowski : U(1) gauge theory

Autori
Dimitrijević, Marija ; Jonke, Larisa

Izvornik
The Journal of high energy physics (1126-6708) 2011 (2011), 12; 080-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
noncommutative field theory; gauge theory

Sažetak
Kappa-Minkowski space-time is an example of noncommutative space-time with potentially interesting phenomenological consequences. However, the construction of field theories on this space, although operationally well-defined, is plagued with ambiguities. A part of ambiguities can be resolved by clarifying the geometrical picture of gauge transformations on the κ-Minkowski space-time. To this end we use the twist approach to construct the noncommutative U(1) gauge theory coupled to fermions. However, in this approach we cannot maintain the kappa-Poincaré symmetry ; the corresponding symmetry of the twisted kappa-Minkowski space is the twisted igl(1, 3) symmetry. We construct an action for the gauge and matter fields in a geometric way, as an integral of a maximal form. We use the Seiberg-Witten map to relate noncommutative and commutative degrees of freedom and expand the action to obtain the first order corrections in the deformation parameter.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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