One-loop $β$ functions of a translation-invariant renormalizable noncommutative scalar model

Geloun, Joseph Ben; Tanasa, Adrian

One-loop $β$ functions of a translation-invariant renormalizable noncommutative scalar model

Authors

Description

Recently, a new type of renormalizable $ϕ^{\star 4}_{4}$ scalar model on the Moyal space was proved to be perturbatively renormalizable. It is translation-invariant and introduces in the action a $a/(θ^2p^2)$ term. We calculate here the $β$ and $γ$ functions at one-loop level for this model. The coupling constant $β_λ$ function is proved to have the same behaviour as the one of the $ϕ^4$ model on the commutative $\mathbb{R}^4$. The $β_a$ function of the new parameter $a$ is also calculated. Some interpretation of these results are done.
13 pages, 3 figures