MG12 - Talk detail |
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Participant |
BHATTACHARYA, SOURAV | |
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Institution |
S. N. BOSE NATIONAL CENTRE FOR BASIC SCIENCES - BLOCK - JD, SECTOR - III, SALT LAKE - KOLKATA - WEST BENGAL - India | |
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Session |
Talk |
Abstract |
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MGAT4 |
Effect of a positive cosmological constant on cosmic strings |
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. |