Wilsonian Renormalization of Noncommutative Scalar Field Theory

Abstract

Drawing on analogies with the commutative case, the Wilsonian picture of renormalization is developed for noncommutative scalar field theory. The dimensionful noncommutativity parameter, theta, induces several new features. Fixed-points are replaced by `floating-points' (actions which are scale independent only up to appearances of theta written in cutoff units). Furthermore, it is found that one must use correctly normalized operators, with respect to a new scalar product, to define the right notion of relevance and irrelevance. In this framework it is straightforward and intuitive to reproduce the classification of operators found by Grosse & Wulkenhaar, around the Gaussian floating-point. The one-loop beta-function of their model is computed directly within the exact renormalization group, reproducing the previous result that it vanishes in the self-dual theory, in the limit of large cutoff. With the link between this methodology and earlier results made, it is discussed how the vanishing of the beta-function to all loops, as found by Disertori et al., should be interpreted in a Wilsonian framework.

54pages; v2: published in JHEP - very minor changes

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Cited by in corpus (12)

• Fundamentals of the Exact Renormalization Group
• Topological Graph Polynomials in Colored Group Field Theory
• Bosonic Colored Group Field Theory
• Functional Renormalisation Group Approach for Tensorial Group Field Theory: a Rank-3 Model
• Radiative corrections in the Boulatov-Ooguri tensor model: The 2-point function
• Functional Renormalisation Group analysis of Tensorial Group Field Theories on ${\mathbb{R}}^d$
• Critical behavior in spherical and hyperbolic spaces
• Equivalent Fixed-Points in the Effective Average Action Formalism
• UV/IR duality in noncommutative quantum field theory
• The fate of the Wilson-Fisher fixed point in non-commutative ϕ^4
• An Extension of Pohlmeyer's Theorem
• Wilson RG of Noncommutative ${\Phi }_4^4$