Warm-assisted natural inflation

doi:10.1088/1475-7516/2021/04/077

CORC > 理论物理研究所 > 中国科学院理论物理研究所 > 理论物理所科研产出 > 理论物理所1978-2010年知识产出

	Warm-assisted natural inflation
	Reyimuaji, Yakefu ; Zhang, Xinyi 1,2,3
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2021
期号	4 页码:77
关键词	SPECTRA MODELS
ISSN号	1475-7516
DOI	10.1088/1475-7516/2021/04/077
英文摘要	We consider natural inflation in a warm inflation framework with a temperature-dependent dissipative coefficient Gamma proportional to T-3. Natural inflation can be compatible with the Planck 2018 results with such warm assistance. With no a priori assumptions on the dissipative effect's magnitude, we find that the Planck results prefer a weak dissipative regime for our benchmark scale f = 5M(pl), which lies outside the 2 sigma region in the cold case. The inflation starts in the cold regime and evolves with a growing thermal fluctuation that dominates over quantum fluctuation before the end of the inflation. The observed spectral tilt puts stringent constraints on the model's parameter space. We find that f <1M(pl) is excluded. A possible origin of such dissipative coefficient from axion-like coupling to gauge fields and tests of the model are also discussed.
学科主题	Astronomy & Astrophysics ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27535]
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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 4.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Reyimuaji, Yakefu,Zhang, Xinyi. Warm-assisted natural inflation[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2021(4):77.
APA	Reyimuaji, Yakefu,&Zhang, Xinyi.(2021).Warm-assisted natural inflation.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(4),77.
MLA	Reyimuaji, Yakefu,et al."Warm-assisted natural inflation".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .4(2021):77.