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Classicality of the primordial perturbations

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arxiv astro-ph/0607647 v3 pith:R46RNG7D submitted 2006-07-28 astro-ph

David H. Lyth , David Seery This is my paper · ORCID
classification astro-ph
keywords becomesclassicalclassicalitydiscussedduringfirstfluctuationimplications
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We show that during inflation, a quantum fluctuation becomes classical at all orders if it becomes classical at first order. Implications are discussed.

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  1. 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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