Scale-invariant tensor spectrum from conformal gravity

Taeyoon Moon; Yun Soo Myung

Scale-invariant tensor spectrum from conformal gravity

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arxiv 1501.01749 v2 pith:GIX3LH3N submitted 2015-01-08 gr-qc hep-th

Yun Soo Myung , Taeyoon Moon This is my paper · ORCID

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keywords tensorconformalgravityscale-invariantspectrumcosmologicalduringgenerated

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abstract

We study cosmological tensor perturbations generated during de Sitter inflation in the conformal gravity with mass parameter $m^2=2H^2$. It turns out that tensor power spectrum is scale-invariant.

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Primordial Gravitational Waves in Quadratic Gravity
gr-qc 2025-02 unverdicted novelty 6.0 of 10

In quadratic gravity, the inflationary tensor power spectrum is suppressed by (1 + 2H_*^2/m_gh^2)^{-1}, which restores the standard consistency relation r = -8n_t.

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