Vol 12, No 6

Cosmological perturbations in a noncommutative braneworld inflation

Kourosh Nozari, Siamak Akhshabi


Abstract We use the smeared, coherent state picture of noncommutativity to study evolution of perturbations in a noncommutative braneworld scenario. Within the standard procedure of studying braneworld cosmological perturbations, we study the evolution of the Bardeen metric potential and curvature perturbations in this model. We show that in this setup, the early stage of the universe’s evolution has a transient phantom evolution with imaginary effective sound speed.


Keywords early universe cosmology — cosmology theory

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