English

$\kappa$-Poincar\'e invariant orientable field theories at 1-loop

High Energy Physics - Theory 2019-01-15 v2 Mathematical Physics math.MP

Abstract

We consider a family of κ\kappa-Poincar\'e invariant scalar field theories on 4-d κ\kappa-Minkowski space with quartic orientable interaction, that is for which ϕ\phi and its conjugate ϕ\phi^\dag alternate in the quartic interaction, and whose kinetic operator is the square of a Uκ(iso(4))U_\kappa(iso(4))-equivariant Dirac operator. The formal commutative limit yields the standard complex ϕ4\phi^4 theory. We find that the 2-point function receives UV linearly diverging 1-loop corrections while it stays free of IR singularities that would signal occurrence of UV/IR mixing. We find that all the 1-loop planar and non-planar contributions to the 4-point function are UV finite, stemming from the existence of the particular estimate for the propagator partly combined with its decay properties at large momenta, implying formally vanishing of the beta-functions at 1-loop so that the coupling constants stay scale-invariant at 1-loop.

Keywords

Cite

@article{arxiv.1808.00350,
  title  = {$\kappa$-Poincar\'e invariant orientable field theories at 1-loop},
  author = {Timothé Poulain and Jean-Christophe Wallet},
  journal= {arXiv preprint arXiv:1808.00350},
  year   = {2019}
}

Comments

18 pages. Misprints corrected, title shortened. Version to appear in JHEP

R2 v1 2026-06-23T03:21:39.240Z