2017/12/28 by Suratna Das, Girish Kumar Chakravarty, Das, Suratna +5
Earth and Planetary Sciences · Physics and Astronomy · #Cosmology and Gravitation Theories #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Geophysics and Gravity Measurements #High Energy Physics - Phenomenology (hep-ph) #Solar and Space Plasma Dynamics
paper · pdf · doi:10.48550/arxiv.1712.09841
openalex publication_date 2017/12/28 · openalex created_date 2022/10/02 · openalex updated_date 2026/07/28
After the release of the PLANCK data, it is evident that inflationary\nparadigm has stood the test of time. Even though, it is difficult to realise\ninflationary paradigm in a particle physics model as the present observations\nhave ruled out the simplest quartic and quadratic inflationary potentials,\nwhich generically arise in particle physics. We would show that such simplest\ninflationary potentials can evade discrepancies with observations, if the\ninflaton field is assisted by another scalar during inflation. Moreover, unlike\nother multifield models, our model yields no isocurvature perturbations and\nnegligible non-Gaussianity, making it more compatible with the present data.\nAbove all, our model can also be realised in the framework of SUGRA.\n