Access count of this item: 88

Files in This Item:
File Description SizeFormat 
1475-7516_2013_02_029.pdf226.17 kBAdobe PDFView/Open
Title: Hawking-Moss instanton in nonlinear massive gravity
Authors: Zhang, Ying-li
Saito, Ryo
Sasaki, Misao  kyouindb  KAKEN_id
Author's alias: 章, 穎理
Keywords: quantum cosmology
modified gravity
cosmological phase transitions
physics of the early universe
Issue Date: 1-Feb-2013
Publisher: IOP Publishing
Journal title: Journal of Cosmology and Astroparticle Physics
Volume: 2013
Issue: 02
Thesis number: 029
Abstract: As a first step toward understanding a lanscape of vacua in a theory of non-linear massive gravity, we consider a landscape of a single scalar field and study tunneling between a pair of adjacent vacua. We study the Hawking-Moss (HM) instanton that sits at a local maximum of the potential, and evaluate the dependence of the tunneling rate on the parameters of the theory. It is found that provided with the same physical HM Hubble parameter H[HM], depending on the values of parameters α[3] and α[4] in the action (2.2), the corresponding tunneling rate can be either enhanced or suppressed when compared to the one in the context of General Relativity (GR). Furthermore, we find the constraint on the ratio of the physical Hubble parameter to the fiducial one, which constrains the form of potential. This result is in sharp contrast to GR where there is no bound on the minimum value of the potential.
Rights: © 2013 IOP Publishing Ltd and Sissa Medialab srl
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1088/1475-7516/2013/02/029
Appears in Collections:Journal Articles

Show full item record

Export to RefWorks

Export Format: 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.