Effects of Quantum Deformations on the Spectrum of Cosmological Perturbations

Details Effects of Quantum Deformations on the Spectrum of Cosmological Perturbations Effects of Quantum Deformations on the Spectrum of Cosmological Perturbations

2003-05-28

arxiv.org/abs/hep-th/0305244v3

Phys.Rev. D68 (2003) 063514

Physics

High Energy Physics

High Energy Physics - Theory

References added

Scientific paper

10.1103/PhysRevD.68.063514

We consider a quantum deformation of the wave equation on a cosmological background as a toy-model for possible trans-Planckian effects. We compute the power spectrum of scalar and tensor fluctuations for power-law inflation, and find a noticeable deviation from the standard result. We consider de Sitter inflation as a special case, and find that the resulting power spectrum is scale invariant. For both inflationary scenarios the departure from the standard spectrum is sensitive to the size of the deformation parameter. A modulation in the power spectrum appears to be a generic feature of the model.

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