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arXiv · 1508.04188

Scale-invariant power spectra from a Weyl-invariant scalar-tensor theory

Yun Soo Myung·Young-Jai Park
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Abstract

We obtain scale-invariant scalar and tensor power spectra from a Weyl-invariant scalar-tensor theory in de Sitter spacetime. This implies that the Weyl-invariance guarantees to implement the scale-invariance of power spectrum in de Sitter spacetime. We establish a deep connection between the Weyl-invariance of the action and scale-invariance of power spectrum in de Sitter spacetime.

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Yun Soo Myung, Young-Jai Park. 2016-02-18. Scale-invariant power spectra from a Weyl-invariant scalar-tensor theory. https://doi.org/10.1140/epjc%2Fs10052-016-3924-0

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