@inproceedings{ad1cb0288bcf423796c67766ab79012c,
title = "Evidence for Planck-scale resonant particle production during inflation from the CMB power spectrum",
abstract = "The power spectrum of the cosmic microwave background from both the Planck and WMAP data exhibits a slight dip for multipoles in the range of l = 10−30. We show that such a dip could be the result of the resonant creation of massive particles that couple to the inflaton field. For our best-fit models, the epoch of resonant particle creation reenters the horizon at a wave number of k∗ ∼ 0.0011 ± 0.0004 (h Mpc−1). The amplitude and location of this feature corresponds to the creation of a number of degenerate fermion species of mass ∼ (8 − 11)/λ3/2 mpl during inflation where λ ∼ (1.0 ± 0.5)N−2/5 is the coupling constant between the inflaton field and the created fermion species, while N is the number of degenerate species. Although the evidence is of marginal statistical significance, this could constitute new observational hints of unexplored physics beyond the Planck scale.",
keywords = "Cosmic microwave background, Inflation, String theory",
author = "Mathews, \{Grant J.\} and Gangopadhyay, \{Mayukh R.\} and Kiyotomo Ichiki and Toshitaka Kajino",
note = "Publisher Copyright: Copyright {\textcopyright} 2018 by the Editors.All rights reserved.; 14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories ; Conference date: 12-07-2015 Through 18-07-2015",
year = "2018",
doi = "10.1142/9789813226609\_0570",
language = "英语",
series = "14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings",
publisher = "World Scientific Publishing Co. Pte Ltd",
pages = "4256--4261",
editor = "Massimo Bianchi and Jantzen, \{Robert T\} and Remo Ruffini and Remo Ruffini",
booktitle = "14th Marcel Grossman Meeting On Recent Developments in Theoretical and Experimental General Relativity, Astrophysics and Relativistic Field Theories, Proceedings",
address = "新加坡",
}