Non-perturbative quantum Galileon in the exact renormalization group

Author:

Steinwachs Christian F.

Abstract

Abstract We investigate the non-perturbative renormalization group flow of the scalar Galileon model in flat space. We discuss different expansion schemes of the Galileon truncation, including a heat-kernel based derivative expansion, a vertex expansion in momentum space and a curvature expansion in terms of a covariant geometric formulation. We find that the Galileon symmetry prevents a quantum induced renormalization group running of the Galileon couplings. Consequently, the Galileon truncation only features a trivial Gaussian fixed point.

Publisher

IOP Publishing

Subject

Astronomy and Astrophysics

Reference100 articles.

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