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Title: Non-Gaussian isocurvature perturbations from inflation

Abstract

We present a class of very simple inflationary models of two scalar fields which leads to non-Gaussian isothermal perturbations with a {open_quotes}blue{close_quotes} spectrum, n{gt}1. One of the models is inspired by supersymmetric theories where light scalar fields naturally acquire masses {approximately}H during inflation. Another model presumes that one of the fields has a nonminimal interaction with gravity {xi}R{sigma}{sup 2}. By a slight modification of parameters of these models one can obtain either Gaussian isothermal perturbations, or non-Gaussian adiabatic perturbations with n{gt}1. {copyright} {ital 1997} {ital The American Physical Society}

Authors:
 [1];  [2]
  1. Physics Department, Stanford University, Stanford, California 94305-4060 (United States)
  2. Institute for Theoretical Physics, ETH, Honggerberg 8093, Zurich (Switzerland)
Publication Date:
OSTI Identifier:
527106
Resource Type:
Journal Article
Journal Name:
Physical Review, D
Additional Journal Information:
Journal Volume: 56; Journal Issue: 2; Other Information: PBD: Jul 1997
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; INFLATIONARY UNIVERSE; PERTURBATION THEORY; COSMOLOGY; SUPERGRAVITY; INFLATION; SCALAR FIELDS; SPECTRA; SUPERSYMMETRY; FLUCTUATIONS; MICROWAVE RADIATION; BACKGROUND RADIATION; GALAXIES; ENTROPY

Citation Formats

Linde, A, and Mukhanov, V. Non-Gaussian isocurvature perturbations from inflation. United States: N. p., 1997. Web. doi:10.1103/PhysRevD.56.R535.
Linde, A, & Mukhanov, V. Non-Gaussian isocurvature perturbations from inflation. United States. https://doi.org/10.1103/PhysRevD.56.R535
Linde, A, and Mukhanov, V. 1997. "Non-Gaussian isocurvature perturbations from inflation". United States. https://doi.org/10.1103/PhysRevD.56.R535.
@article{osti_527106,
title = {Non-Gaussian isocurvature perturbations from inflation},
author = {Linde, A and Mukhanov, V},
abstractNote = {We present a class of very simple inflationary models of two scalar fields which leads to non-Gaussian isothermal perturbations with a {open_quotes}blue{close_quotes} spectrum, n{gt}1. One of the models is inspired by supersymmetric theories where light scalar fields naturally acquire masses {approximately}H during inflation. Another model presumes that one of the fields has a nonminimal interaction with gravity {xi}R{sigma}{sup 2}. By a slight modification of parameters of these models one can obtain either Gaussian isothermal perturbations, or non-Gaussian adiabatic perturbations with n{gt}1. {copyright} {ital 1997} {ital The American Physical Society}},
doi = {10.1103/PhysRevD.56.R535},
url = {https://www.osti.gov/biblio/527106}, journal = {Physical Review, D},
number = 2,
volume = 56,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 1997},
month = {Tue Jul 01 00:00:00 EDT 1997}
}