Curvaton with a double well potential

Ki Young Choi; Osamu Seto

Curvaton with a double well potential

Research output: Contribution to conference › Paper › peer-review

Abstract

We study the curvature perturbation in the presence of a curvaton with a double well potential and give analytical expressions for the solution of field equation and a nonlinear parameters f_NL with emphasizing the differences from the simple quadratic potential. We show that the level of non-Gaussianity and the tensor-to-scalar ratio depends crucially on the reheating temperature as well as the curvaton self coupling constant for a given initial amplitude of the curvaton.

Original language	English
Pages	359-362
Number of pages	4
State	Published - 2010
Externally published	Yes
Event	20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 - Kyoto, Japan Duration: 21 Sep 2010 → 25 Sep 2010

Conference

Conference	20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010
Country/Territory	Japan
City	Kyoto
Period	21/09/10 → 25/09/10

Cite this

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title = "Curvaton with a double well potential",

abstract = "We study the curvature perturbation in the presence of a curvaton with a double well potential and give analytical expressions for the solution of field equation and a nonlinear parameters fNL with emphasizing the differences from the simple quadratic potential. We show that the level of non-Gaussianity and the tensor-to-scalar ratio depends crucially on the reheating temperature as well as the curvaton self coupling constant for a given initial amplitude of the curvaton.",

author = "Choi, \{Ki Young\} and Osamu Seto",

year = "2010",

language = "English",

pages = "359--362",

note = "20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010 ; Conference date: 21-09-2010 Through 25-09-2010",

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TY - CONF

T1 - Curvaton with a double well potential

AU - Choi, Ki Young

AU - Seto, Osamu

PY - 2010

Y1 - 2010

N2 - We study the curvature perturbation in the presence of a curvaton with a double well potential and give analytical expressions for the solution of field equation and a nonlinear parameters fNL with emphasizing the differences from the simple quadratic potential. We show that the level of non-Gaussianity and the tensor-to-scalar ratio depends crucially on the reheating temperature as well as the curvaton self coupling constant for a given initial amplitude of the curvaton.

AB - We study the curvature perturbation in the presence of a curvaton with a double well potential and give analytical expressions for the solution of field equation and a nonlinear parameters fNL with emphasizing the differences from the simple quadratic potential. We show that the level of non-Gaussianity and the tensor-to-scalar ratio depends crucially on the reheating temperature as well as the curvaton self coupling constant for a given initial amplitude of the curvaton.

UR - https://www.scopus.com/pages/publications/84887416127

M3 - Paper

AN - SCOPUS:84887416127

SP - 359

EP - 362

T2 - 20th Workshop on General Relativity and Gravitation in Japan, JGRG 2010

Y2 - 21 September 2010 through 25 September 2010

ER -

Curvaton with a double well potential

Abstract

Conference

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