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Renormalisation of \phi^4-theory on noncommutative R^4 in the matrix base

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arxiv hep-th/0401128 v2 pith:BMHVQBI4 submitted 2004-01-20 hep-th

classification hep-th
keywords actionnoncommutativerenormalisationtheorybaseflowfreematrix
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We prove that the real four-dimensional Euclidean noncommutative \phi^4-model is renormalisable to all orders in perturbation theory. Compared with the commutative case, the bare action of relevant and marginal couplings contains necessarily an additional term: an harmonic oscillator potential for the free scalar field action. This entails a modified dispersion relation for the free theory, which becomes important at large distances (UV/IR-entanglement). The renormalisation proof relies on flow equations for the expansion coefficients of the effective action with respect to scalar fields written in the matrix base of the noncommutative R^4. The renormalisation flow depends on the topology of ribbon graphs and on the asymptotic and local behaviour of the propagator governed by orthogonal Meixner polynomials.

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Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. UV/IR mixing as an artifact of non-covariant quantisation

    hep-th 2026-06 unverdicted novelty 7.0 of 10

    UV/IR mixing in noncommutative scalar field theories is shown to be an artifact of a non-covariant quantization choice rather than an intrinsic feature of noncommutativity.

  2. From path integral quantization to stochastic quantization: a pedestrian's journey

    math-ph 2026-03 unverdicted novelty 7.0 of 10

    Two novel proofs establish equivalence between path integral and stochastic quantizations for scalar Euclidean QFTs via forest-indexed Taylor interpolations.

  3. IR Dynamics from UV Divergences: UV/IR Mixing, NCFT, and the Hierarchy Problem

    hep-ph 2019-09 conditional novelty 7.0 of 10

    In noncommutative Yukawa theory, the CPT-required pair of interaction orderings converts the one-loop ultraviolet quadratic divergence into an infrared pole that is reachable in the s-channel.

  4. Solution of the self-dual $\Phi^4$ QFT-model on four-dimensional Moyal space

    math-ph 2019-08 accept novelty 7.0 of 10

    The planar sector of the self-dual Φ^4 model on 4D Moyal space is solved in closed form by a hypergeometric function, and the model's spectral dimension is proven to be 4 - (2/π) arcsin(λπ).

  5. Geometric noise spectrum in interferometers

    hep-th 2026-01 unverdicted novelty 6.0 of 10

    The noise spectrum an interferometer would see from quantum spacetime jitter is computed for vacuum, thermal, squeezed, and scalar-backreaction states; all are Planck-suppressed.

  6. Relationship between a $\Phi^4$ matrix model and harmonic oscillator systems

    hep-th 2025-07 conditional novelty 6.0 of 10

    The paper gives a free-energy formula for Virasoro eigenstates and a connected-correlator form of the Schwinger-Dyson equation for the Phi^4 matrix model with Kontsevich-type kinetic term.

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