Lorentz invariant field theory on κ–Minkowski space
Lorentz invariant field theory on κ–Minkowski space
It is by now well established that the momentum space associated with the non-commutative κ-Minkowski space is a submanifold of de Sitter space. It has been noted recently that field theories built on such momentum space suffer from a subtle form of Lorentz symmetry breaking. Namely, for any negative energy …