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Generalized Space-time Noncommutative Inflation

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arxiv 0706.1843 v2 pith:HUTPXOS3 submitted 2007-06-13 hep-th

Wei Xue , Bin Chen , Yi Wang This is my paper · ORCID
classification hep-th
keywords inflationnoncommutativenoncommutativitypowerspectrumtimeanalysisclues
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We study the noncommutative inflation with a time-dependent noncommutativity between space and time. From the numerical analysis of power law inflation, there are clues that the CMB spectrum indicates a nonconstant noncommutative inflation. Then we extend our treatment to the inflation models with more general noncommutativity and find that the scalar perturbation power spectrum depends sensitively on the time varying of the spacetime noncommutativity. This stringy effect may be probed in the future cosmological observations.

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  1. Modified Mukhanov-Sasaki equation and primordial perturbations in $\kappa$-deformed non-commutative space-time

    gr-qc 2026-07 reject novelty 5.0 of 10

    A κ-deformed star product modifies the inflationary perturbation equation, yielding a (ln k)^2 correction to the power spectrum and a claimed ACT DR6 bound on the deformation length.

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