Cylindrical wormholes with positive cosmological constant
We construct cylindrical, traversable wormholes with finite radii by taking into account the cutand-paste procedure for the case of cosmic string manifolds with a positive cosmological constant. Under reasonable assumptions about the equation of state of the matter located at the shell, we find that...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2013 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/26767 |
| Acceso en línea: | http://hdl.handle.net/11336/26767 |
| Access Level: | acceso abierto |
| Palabra clave: | Wormhole Cosmological constant Cylindrical https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| Sumario: | We construct cylindrical, traversable wormholes with finite radii by taking into account the cutand-paste procedure for the case of cosmic string manifolds with a positive cosmological constant. Under reasonable assumptions about the equation of state of the matter located at the shell, we find that the wormhole throat undergoes a monotonous evolution provided it moves at a constant velocity. In order to explore the dynamical nonlinear behaviour of the wormhole throat, we consider that the matter at the shell is supported by anisotropic Chaplygin gas, anti-Chaplygin gas, or a mixed of Chaplygin and anti-Chaplygin gases implying that wormholes could suffer an accelerated expansion or contraction but the oscillatory behavior seems to be forbidden. |
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