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Enhancing the tensor-to-scalar ratio in simple inflation

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arxiv astro-ph/0512066 v2 pith:24QZBQPA submitted 2005-12-02 astro-ph gr-qchep-th

Enhancing the tensor-to-scalar ratio in simple inflation

classification astro-ph gr-qchep-th
keywords inflationsimplehigherlargerratiotensor-to-scalarb-componentcompared
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show that in theories with a nontrivial kinetic term the contribution of the gravitational waves to the CMB fluctuations can be substantially larger than that is naively expected in simple inflationary models. This increase of the tensor-to-scalar perturbation ratio leads to a larger B-component of the CMB polarization, thus making the prospects for future detection much more promising. The other important consequence of the considered model is a higher energy scale of inflation and hence higher reheating temperature compared to a simple inflation.

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    gr-qc 2026-05 unverdicted novelty 3.0

    MCMC fitting of joint P-ACT-LB-BK18 dataset constrains non-canonical parameter alpha to 8.8, 11.7, and 16.4 (1 sigma) for chaotic inflation potentials with n=1/3, 2/3, 1 respectively.