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Title: Productive interactions: heavy particles and non-Gaussianity

Abstract

We study some observational consequences on the theory of inflation that particles with an high mass that could be produced during that phase, could have.

Authors:
 [1];  [2];  [3];  [3]
  1. The Univ. of Texas at Austin, Austin, TX (United States)
  2. Institute for Advanced Study, Princeton, NJ (United States)
  3. Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Kavli Institute for Particle Astrophysics and Cosmology, Stanford, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1417667
Alternate Identifier(s):
OSTI ID: 1491157
Grant/Contract Number:  
AC02-76SF00515; SC0008078
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2017; Journal Issue: 10; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; inflation; non-gaussianity; physics of the early universe

Citation Formats

Flauger, Raphael, Mirbabayi, Mehrdad, Senatore, Leonardo, and Silverstein, Eva. Productive interactions: heavy particles and non-Gaussianity. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/10/058.
Flauger, Raphael, Mirbabayi, Mehrdad, Senatore, Leonardo, & Silverstein, Eva. Productive interactions: heavy particles and non-Gaussianity. United States. doi:https://doi.org/10.1088/1475-7516/2017/10/058
Flauger, Raphael, Mirbabayi, Mehrdad, Senatore, Leonardo, and Silverstein, Eva. Tue . "Productive interactions: heavy particles and non-Gaussianity". United States. doi:https://doi.org/10.1088/1475-7516/2017/10/058. https://www.osti.gov/servlets/purl/1417667.
@article{osti_1417667,
title = {Productive interactions: heavy particles and non-Gaussianity},
author = {Flauger, Raphael and Mirbabayi, Mehrdad and Senatore, Leonardo and Silverstein, Eva},
abstractNote = {We study some observational consequences on the theory of inflation that particles with an high mass that could be produced during that phase, could have.},
doi = {10.1088/1475-7516/2017/10/058},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 10,
volume = 2017,
place = {United States},
year = {2017},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 11 works
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Figures / Tables:

Figure 1 Figure 1: Pictorial representation of our findings: in an inflationary theory with an approximate continuous shift symmetry for the inflaton, only particles that are not much heavier than the Hubble scale H are relevant for the dynamics of the fluctuations. However, as we will see, if the continuous shift symmetrymore » is broken, e.g. to a discrete shift symmetry, heavier particles can become relevant as depicted on the right. In the scenarios studied in this work, the new scale is set by Φ. The basic estimate exp(−πm2/Φ) ∼ 1/√Nmodes suggests observational sensitivity to these massive particles, which we confirm in a detailed analysis.« less

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