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

Understand

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 kappa-Minkowski space-time.
• To this end we use the twist approach to construct the noncommutative U(1) gauge theory coupled to fermions.