RIGHT-HANDED SNEUTRINO CURVATON AND NON-GAUSSIANITY

被引：4
|
作者：
Lin, Chia-Min [1 ]
Cheung, Kingman [1 ,2 ,3 ]
机构：
[1] Natl Tsing Hua Univ, Dept Phys, Hsinchu 300, Taiwan
[2] Konkuk Univ, Sch Phys, Div Quantum Phases & Devices, Seoul 143701, South Korea
[3] Natl Ctr Theoret Sci, Div Phys, Hsinchu 300, Taiwan
来源：
MODERN PHYSICS LETTERS A | 2010年 / 25卷 / 26期
基金：
新加坡国家研究基金会;
关键词：
Curvation; non-Gaussionity; INFLATION; COSMOLOGY; SCENARIO;
D O I：
10.1142/S0217732310033542
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we explore the parameter space for a Right-Handed (RH) sneutrino curvaton that can generate large non-gaussianity without assuming any particular inflation sector. The mass of the RH sneutrino is suggested from a discussion on the initial condition of the curvation field. It is shown that a small Yukawa coupling is generally required for a successful RH sneutrino curvaton. However, the Yukawa coupling can be larger if we consider the braneworld scenario. Some general discussion about the spectral index in curvation scenario is also provided.
引用
收藏
页码：2231 / 2239
页数：9
相关论文
共 50 条
  • [1] Non-Gaussianity from two right-handed sneutrino curvaton decays
    Lee, Lu-Yun
    Lin, Chia-Min
    [J]. GENERAL RELATIVITY AND GRAVITATION, 2012, 44 (10) : 2433 - 2447
  • [2] Non-Gaussianity from two right-handed sneutrino curvaton decays
    Lu-Yun Lee
    Chia-Min Lin
    [J]. General Relativity and Gravitation, 2012, 44 : 2433 - 2447
  • [3] Large non-Gaussianity generated after D-term inflation by right-handed sneutrino curvaton
    Lin, Chia-Min
    Cheung, Kingman
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2009, (06):
  • [4] Conditions for a successful right-handed Majorana sneutrino curvaton
    McDonald, J
    [J]. PHYSICAL REVIEW D, 2004, 70 (06): : 063520 - 1
  • [5] Non-Gaussianity in the curvaton scenario
    Bartolo, N
    Matarrese, S
    Riotto, A
    [J]. PHYSICAL REVIEW D, 2004, 69 (04):
  • [6] Non-Gaussianity in the inflating curvaton
    Enomoto, Seishi
    Kohri, Kazunori
    Matsuda, Tomohiro
    [J]. PHYSICAL REVIEW D, 2013, 87 (12):
  • [7] Signatures of non-Gaussianity in the curvaton model
    Enqvist, Kari
    Takahashi, Tomo
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2008, (09):
  • [8] Non-Gaussianity from axionic curvaton
    Kawasaki, Masahiro
    Kobayashi, Takeshi
    Takahashi, Fuminobu
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2013, (03):
  • [9] Non-Gaussianity from attractor curvaton
    Harigaya, Keisuke
    Ibe, Masahiro
    Kawasaki, Masahiro
    Yanagida, Tsutomu T.
    [J]. PHYSICAL REVIEW D, 2013, 87 (06)
  • [10] Inflation with the right-handed sneutrino revisited
    Efthimiou, O.
    Tamvakis, K.
    [J]. PHYSICS LETTERS B, 2010, 685 (4-5) : 235 - 238
12345