Sub-Planckian inflation & large tensor to scalar ratio with r≥ 0.1

2014/04/13 by Sayantan Choudhury, Anupam Mazumdar, Choudhury, Sayantan +1 · 1 citation
Computer Science · Economics, Econometrics and Finance · Physics and Astronomy · #Computational Physics and Python Applications #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Stochastic processes and financial applications #astro-ph.CO #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.48550/arxiv.1404.3398

6 pages, 1 figure, Comment on arXiv:1404.1821 [hep-ph]. Computational error corrected in Eq(7). But conclusion remains unchanged as it completely nullifies the added claim of arXiv:1404.1821 [hep-ph]

openalex publication_date 2014/04/13 · arxiv created 2014/04/18 · arxiv updated 2014/04/21 · openalex created_date 2024/04/11 · openalex updated_date 2026/07/28

Abstract

We categorically point out why the analysis of arXiv:1404.1821 [hep-ph] is incorrect. Here we explicitly show why the sub-Planckian field excursion of the inflaton field can yield large observable tensor-to-scalar ratio, which satisfies both Planck and BICEP constraints.

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