Inflation in R plus R-2 gravity with torsion

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/38943

Title:	Inflation in R plus R-2 gravity with torsion
Authors:	Wang,CH;Wu,YH
Contributors:	物理研究所
Keywords:	POINCARE GAUGE-THEORY;FUNDAMENTAL PARTICLES;COSMOLOGICAL MODELS;GENERAL-RELATIVITY;BIANCHI IDENTITIES;ENERGY
Date:	2009
Issue Date:	2010-07-08 13:59:55 (UTC+8)
Publisher:	中央大學
Abstract:	We examine an inflationary model in R + R-2 gravity with torsion, where R-2 denotes five independent quadratic curvature invariants; it turns out that only two free parameters remain in this model. We show that the behavior of the scale factor a(t) is determined by two scalar fields, axial torsion chi(t) and the totally anti-symmetric curvature E(t), which satisfy two first-order differential equations. Considering chi approximate to 0 during inflation leads to a power-law inflation: a similar to (t + A)(p) where 1 < p <= 2, and the constant A is determined by the initial values of E, chi and the two parameters. After the end of inflation, chi and E will enter into an oscillatory phase.
Relation:	CLASSICAL AND QUANTUM GRAVITY
Appears in Collections:	[Graduate Institute of Physics] journal & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	465	View/Open

社群 sharing