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- W4300787298 abstract "Inflationary cosmology with a preceding nonsingular bounce can lead to changes on the primordial density fluctuations. One significant prediction is that the amplitude of the power spectrum may undergo a jump at a critical scale. In this Letter we propose a phenomenological parametrization of the primordial power spectrum in this scenario and confront the jump feature with latest cosmological data. Performing a global fitting, we utilize this possibility to derive a novel method for constraining bounce parameters via cosmological measurements. Combining the CMB, LSS and SNIa data, our result interestingly reveals that a nonsingular bounce, if exists, should be a fast bounce which happens at a very high energy scale, as we get an upper limit on the bounce parameters." @default.
- W4300787298 created "2022-10-04" @default.
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- W4300787298 date "2010-09-17" @default.
- W4300787298 modified "2023-10-16" @default.
- W4300787298 title "Evidences for bouncing evolution before inflation in cosmological surveys" @default.
- W4300787298 doi "https://doi.org/10.48550/arxiv.1009.3372" @default.
- W4300787298 hasPublicationYear "2010" @default.
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