Wormhole with varying cosmological constant

被引：65
|
作者：
Rahaman, F. [1 ]
Kalam, M.
Sarker, M.
Ghosh, A.
Raychaudhuri, B.
机构：
[1] Jadavpur Univ, Dept Math, Kolkata 700032, W Bengal, India
[2] Netaji Nagar Coll Women, Dept Phys, Kolkata 700092, India
[3] Surya Sen Mahavidyalaya, Dept Phys, Siliguri, W Bengal, India
来源：
GENERAL RELATIVITY AND GRAVITATION | 2007年 / 39卷 / 02期
关键词：
wormholes; variable cosmological constant; anisotropic source;
D O I：
10.1007/s10714-006-0380-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
It has been suggested that the cosmological constant is a variable dynamical quantity. A class of solution has been presented for the spherically symmetric space time describing wormholes by assuming the erstwhile cosmological constant Lambda to be a space variable scalar, viz., Lambda = Lambda(r). It is shown that the averaged null energy condition ( ANEC) violating exotic matter can be made arbitrarily small.
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页码：145 / 151
页数：7
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