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• W2231205614 startingPage "029" @default.
• W2231205614 abstract "We provide the power spectrum of small scalar perturbations propagating in an inflationary scenario within loop quantum cosmology. We consider the hybrid quantization approach applied to a Friedmann--Robertson--Walker spacetime with flat spatial sections coupled to a massive scalar field. We study the quantum dynamics of scalar perturbations on an effective background within this hybrid approach. We consider in our study adiabatic states of different orders. For them, we find that the hybrid quantization is in good agreement with the predictions of the dressed metric approach. We also propose an initial vacuum state for the perturbations, and compute the primordial and the anisotropy power spectrum in order to qualitatively compare with the current observations of Planck mission. We find that our vacuum state is in good agreement with them, showing a suppression of the power spectrum for large scale anisotropies. We compare with other choices already studied in the literature." @default.
• W2231205614 created "2016-06-24" @default.
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• W2231205614 date "2016-06-14" @default.
• W2231205614 modified "2023-10-14" @default.
• W2231205614 title "Primordial power spectra for scalar perturbations in loop quantum cosmology" @default.
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• W2231205614 doi "https://doi.org/10.1088/1475-7516/2016/06/029" @default.
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