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

页码：2231 / 2239

页数：9

共 50 条

[31] Right-handed sneutrino as cold dark matter of the Universe
Asaka, Takehiko
Ishiwata, Koji
Moroi, Takeo
[J]. PHYSICAL REVIEW D, 2007, 75 (06):
[32] Thermal right-handed sneutrino dark matter in the NMSSM
Cerdeno, David G.
[J]. DARK SIDE OF THE UNIVERSE, 2009, 1178 : 16 - 22
[33] Sommerfeld enhancement of right-handed sneutrino dark matter
Elsheshtawy, A.
Khalil, S.
[J]. PHYSICS OF THE DARK UNIVERSE, 2024, 43
[34] Right-handed sneutrino as cold dark matter of the universe
Asaka, Takehiko
Ishiwata, Koji
Moroi, Takeo
[J]. SUSY06: THE 14TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS, 2007, 903 : 16 - +
[35] Right-handed sneutrino cosmology and hadron collider signatures
de Gouvea, Andre
Gopalakrishna, Shrihari
Porod, Werner
[J]. SUSY06: THE 14TH INTERNATIONAL CONFERENCE ON SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS, 2007, 903 : 221 - +
[36] Right-handed sneutrino as cold dark matter of the universe
Asaka, Takehiko
[J]. TAUP2007: TENTH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, 2008, 120
[37] Light Dirac right-handed sneutrino dark matter
Choi, Ki-Young
Seto, Osamu
[J]. PHYSICAL REVIEW D, 2013, 88 (03):
[38] Non-Gaussianity and cosmic uncertainty in curvaton-type models
Lyth, David H.
[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2006, (06):
[39] Thermal right-handed sneutrino dark matter with a singlet Higgs
Cerdeno, David G.
[J]. DARK SIDE OF THE UNIVERSE, 2009, 1115 : 163 - 168
[40] Gravitational wave background and non-Gaussianity as a probe of the curvaton scenario
Nakayama, Kazunori
Yokoyama, Jun'ichi
[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2010, (01):

← 1 2 3 4 5 →