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Dense DM clumps seeded by cosmic string loops and DM annihilation
dark matter cosmic string cosmology
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2011/10/9
The annihilation of the dark matter in clumps around cosmic string loops is studied. These clumps form at the radiation dominated stage and may have densities \gg\rho_{eq}. We conclude that 100 GeV ne...
Topological Casimir effect in compactified cosmic string spacetime
Topological Casimir effect compactified cosmic string spacetime
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2011/10/18
We investigate the Wightman function, the vacuum expectation values of the field squared and the energy-momentum tensor for a massive scalar field with general curvature coupling in the generalized co...