PROGRESS OF THEORETICAL PHYSICS
|
1991年
/
86卷
/
04期
关键词:
D O I:
10.1143/PTP.86.841
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Possible junctions among Minkowski, Cone and de Sitter space-times are exhausted. Using the positive energy condition for the string, the possible space-times are restricted. The motions of the string in various cases are solved.