Inflation in R plus R-2 gravity with torsion

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题名:	Inflation in R plus R-2 gravity with torsion
作者:	Wang,CH;Wu,YH
贡献者:	物理研究所
关键词:	POINCARE GAUGE-THEORY;FUNDAMENTAL PARTICLES;COSMOLOGICAL MODELS;GENERAL-RELATIVITY;BIANCHI IDENTITIES;ENERGY
日期:	2009
上传时间:	2010-07-08 13:59:55 (UTC+8)
出版者:	中央大學
摘要:	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.
關聯:	CLASSICAL AND QUANTUM GRAVITY
显示于类别:	[物理研究所] 期刊論文

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