Helical Phase Inflation and Monodromy in Supergravity Theory

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	Helical Phase Inflation and Monodromy in Supergravity Theory
	Li, TJ; Li, ZJ; Nanopoulos, DV
刊名	ADVANCES IN HIGH ENERGY PHYSICS
	2015
期号	0 页码:397410
通讯作者	Li, ZJ (reprint author), Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA.
英文摘要	We study helical phase inflation which realizes "monodromy inflation" in supergravity theory. In the model, inflation is driven by the phase component of a complex field whose potential possesses helicoid structure. We construct phase monodromy based on explicitly breaking global U(1) symmetry in the superpotential. By integrating out heavy fields, the phase monodromy from single complex scalar field is realized and the model fulfills natural inflation. The phase-axion alignment is achieved from explicitly symmetry breaking and gives super-Planckian phase decay constant. The F-termscalar potential provides strong field stabilization for all the scalars except inflaton, which is protected by the approximate global U(1) symmetry. Besides, we show that helical phase inflation can be naturally realized in no-scale supergravity with U(2, 1)/U(2) U(1) symmetry since the supergravity setup needed for phase monodromy is automatically provided in the no-scale Kahler potential. We also demonstrate that helical phase inflation can be reduced to another well-known supergravity inflation model with shift symmetry. Helical phase inflation is free from the UV-sensitivity problem although there is super-Planckian field excursion, and it suggests that inflation can be effectively studied based on supersymmetric field theory while a UV-completed framework is not prerequisite.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
关键词[WOS]	IMAGINARY STAROBINSKY MODEL ; NATURAL INFLATION ; CHAOTIC INFLATION
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21121]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Li, TJ,Li, ZJ,Nanopoulos, DV. Helical Phase Inflation and Monodromy in Supergravity Theory[J]. ADVANCES IN HIGH ENERGY PHYSICS,2015(0):397410.
APA	Li, TJ,Li, ZJ,&Nanopoulos, DV.(2015).Helical Phase Inflation and Monodromy in Supergravity Theory.ADVANCES IN HIGH ENERGY PHYSICS(0),397410.
MLA	Li, TJ,et al."Helical Phase Inflation and Monodromy in Supergravity Theory".ADVANCES IN HIGH ENERGY PHYSICS .0(2015):397410.