Locally Rotationally Symmetric Bianchi Type-I Model with Time Varying A Term

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2009,（10）
• 页码范围: 236-239
• 页数: 4页
• 语种: 英文

摘要

We investigate the locally rotationally symmetric (LRS) Bianchi type-Ⅰ cosmological model for stiff matter and a vacuum solution with a cosmological term proportional to R-m (R is the scale factor and m is a positive constant).The cosmological term decreases with time.We obtain that for both the cases the present universe is accelerating with a large fraction of cosmological density in the form of a cosmological term.