Massless cosmic strings in an expanding universe
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DOI: 10.1103/physrevd.98.123531
Abstract: Circular massless cosmic strings which move with the speed of light in the de Sitter universe are described. Construction of the background geometry is based on parabolic isometries of the de Sitter spacetime. Microscopic circular… read more here.
Keywords: geometry; cosmic strings; expanding universe; massless cosmic ... See more keywords