A note on supergravity inflation in braneworld

doi:10.1142/S0217751X21500561

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	A note on supergravity inflation in braneworld
	Sabir, Mudassar 1; Ahmed, Waqas 2; Gong, Yungui 1; Hu, Shan 3; Li, Tianjun 4,5; Wu, Lina 6
刊名	INTERNATIONAL JOURNAL OF MODERN PHYSICS A
	2021
卷号	36 期号:7 页码:2150056
ISSN号	0217-751X
DOI	10.1142/S0217751X21500561
英文摘要	We discuss supergravity inflation in braneworld cosmology for the class of potentials V (phi) = alpha phi(n)exp(-beta(m)phi(m)) with m = 1, 2. These minimal SUGRA models evade the eta problem due to a broken shift symmetry and can easily accommodate the observational constraints. In the high energy regime V/lambda >> 1, the numerical predictions and approximate analytic formulas are given for the scalar spectral index ns and tensor-to-scalar ratio r. The models with smaller n are preferred while the models with larger n are out of the 2 sigma region. Remarkably, the rho(2)/lambda correction to the energy density in Friedmann equation results in sub-Planckian inflaton excursions Delta phi < 1.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27264]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Hubei, Peoples R China 2.Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China 3.Nankai Univ, Sch Phys, Tianjin 300350, Peoples R China 4.Hubei Univ, Fac Phys & Elect Sci, Dept Phys, Wuhan 430062, Hubei, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Phys Sci, Beijing, Peoples R China 7.Xian Technol Univ, Sch Sci, Xian 710021, Shanxi, Peoples R China
推荐引用方式 GB/T 7714	Sabir, Mudassar,Ahmed, Waqas,Gong, Yungui,et al. A note on supergravity inflation in braneworld[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2021,36(7):2150056.
APA	Sabir, Mudassar,Ahmed, Waqas,Gong, Yungui,Hu, Shan,Li, Tianjun,&Wu, Lina.(2021).A note on supergravity inflation in braneworld.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,36(7),2150056.
MLA	Sabir, Mudassar,et al."A note on supergravity inflation in braneworld".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 36.7(2021):2150056.