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Scale-invariant tensor spectrum from conformal gravity
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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.
Forward citations
Cited by 2 Pith papers
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Dark matter in scale-invariant gravity with hidden-sector condensation
A scale-invariant quadratic gravity plus hidden QCD-like sector can generate the Planck and electroweak scales, realize Starobinsky inflation, and produce dark matter from scalaron decay, with candidate masses around ...
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Primordial Gravitational Waves in Quadratic Gravity
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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