MGAT4 - Exact Solutions (Physical Aspects) |
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Speaker |
BHATTACHARYA, SOURAV |
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Co-autors |
Amitabha Lahiri |
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Talk Title |
Effect of a positive cosmological constant on cosmic strings |
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Abstract |
We study cosmic Nielsen-Olesen strings in space-times with a positive cosmological constant. For the free cosmic string in a cylindrically symmetric space-time, we calculate the contribution of the cosmological constant to the angle deficit, and to the bending of null geodesics. For a cosmic string in a Schwarzschild-de Sitter space-time, we use Kruskal patches around the inner and outer horizons to show that a thin string can pierce them. |
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