文献类型：期刊文献

英文题名：The evolution of circular loops of a cosmic string with periodic tension

作者：Wang, Leilin[1,2];Cheng, Hongbo[1,2]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Shanghai Key Lab Astrophys, Shanghai 200234, Peoples R China

年份：2012

卷号：713

期号：1

起止页码：59

外文期刊名：PHYSICS LETTERS B

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000305501700011)】；

基金：The authors thank the anonymous Reviewer for helpful suggestions. This work is supported by NSFC No. 10875043 and is partly supported by the Shanghai Research Foundation No. 07dz22020.

语种：英文

摘要：In this Letter the equation of circular loops of cosmic string with periodic tension is investigated in the Minkowski spacetime and Robertson-Walker universe respectively. We find that the cosmic string loops possessing this kind of time-varying tension will evolve to oscillate instead of collapsing to form a black hole if their initial radii are not small enough. (C) 2012 Published by Elsevier B.V.