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Title: Primordial perturbations in multi-scalar inflation

Abstract

Multiple field models of inflation exhibit new features than single field models. In this work, we study the hierarchy of parameters based on Hubble expansion rate in curved field space and derive the system of flow equations that describe their evolutions. Then we focus on obtaining derivatives of number of e-folds with respect to scalar fields during inflation and at hypersurface of the end of inflation.

Authors:
;  [1]
  1. Department of Physics, University of Tehran, North Kargar Ave, Tehran (Iran, Islamic Republic of)
Publication Date:
OSTI Identifier:
22676079
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2017; Journal Issue: 07; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; DISTURBANCES; EVOLUTION; EXPANSION; FIELD THEORIES; INFLATIONARY UNIVERSE; PERTURBATION THEORY; SCALAR FIELDS; SIMULATION; SPACE

Citation Formats

Abedi, Habib, and Abbassi, Amir M., E-mail: h.abedi@ut.ac.ir, E-mail: amabasi@khayam.ut.ac.ir. Primordial perturbations in multi-scalar inflation. United States: N. p., 2017. Web. doi:10.1088/1475-7516/2017/07/049.
Abedi, Habib, & Abbassi, Amir M., E-mail: h.abedi@ut.ac.ir, E-mail: amabasi@khayam.ut.ac.ir. Primordial perturbations in multi-scalar inflation. United States. doi:10.1088/1475-7516/2017/07/049.
Abedi, Habib, and Abbassi, Amir M., E-mail: h.abedi@ut.ac.ir, E-mail: amabasi@khayam.ut.ac.ir. Sat . "Primordial perturbations in multi-scalar inflation". United States. doi:10.1088/1475-7516/2017/07/049.
@article{osti_22676079,
title = {Primordial perturbations in multi-scalar inflation},
author = {Abedi, Habib and Abbassi, Amir M., E-mail: h.abedi@ut.ac.ir, E-mail: amabasi@khayam.ut.ac.ir},
abstractNote = {Multiple field models of inflation exhibit new features than single field models. In this work, we study the hierarchy of parameters based on Hubble expansion rate in curved field space and derive the system of flow equations that describe their evolutions. Then we focus on obtaining derivatives of number of e-folds with respect to scalar fields during inflation and at hypersurface of the end of inflation.},
doi = {10.1088/1475-7516/2017/07/049},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2017,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}