Preheating and Affleck-Dine leptogenesis after thermal inflation = 예열과, 열적 가속 팽창 이후의 Affleck-Dine형 경입자 생성

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We consider a model of low energy Affleck-Dine leptogenesis in the context of thermal inflation. The lepton asymmetry is generated at the end of thermal inflation, which occurs at a relatively low energy scale with the Hubble parameter somewhere in the range $1 \keV \lesssim H \lesssim 1 \MeV$. Thus Hubble damping will be ineffective in bringing the Affleck-Dine field into the lepton conserving region near the origin, leaving the possibility that the lepton number could be washed out. We suggest that preheating can damp the amplitude of the Affleck-Dine field allowing conservation of the lepton number. In this paper, we demonstrate numerically that preheating does efficiently damp the amplitude of the Affleck-Dine field and that the lepton number is conserved as the result. In addition to demonstrating a crucial aspect of our model, it also opens the more general possibility of low energy Affleck-Dine baryogenesis.
Advisors
Stewart, Ewan-D.researcher스튜어트, 유안researcher
Description
한국과학기술원 : 물리학과,
Publisher
한국과학기술원
Issue Date
2008
Identifier
295297/325007  / 020035091
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 물리학과, 2008.2, [ vii, 53 p. ]

Keywords

thermal inflation; leptogenesis; preheating; 열적 가속 팽창; 경입자 생성; 예열

URI
http://hdl.handle.net/10203/47429
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=295297&flag=dissertation
Appears in Collection
PH-Theses_Ph.D.(박사논문)
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