Abstract
We present (n+1)-dimensional expanding structures in a cosmological background. Due to the expansion of spacetime the throat of wormholes enlarge with time. These solutions are examined in the Einstein’s framework. A general linear relation between diagonal elements of an anisotropic energy-momentum tensor is assumed and the spherically symmetric structures are obtained. Solutions include naked singularity and expanding wormholes in an open universe. The traversibility of wormhole solutions is explored and we find that they are basically traversable. Finally, we consider the corresponding energy-momentum tensor properties and specially take into account the standard energy conditions.
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This work has been supported financially by Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Iran.
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Ebrahimi, E. Higher Dimensional Spherically Symmetric Expanding Wormholes in Einstein’s Gravity. Int J Theor Phys 53, 2130–2139 (2014). https://doi.org/10.1007/s10773-014-2018-8
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DOI: https://doi.org/10.1007/s10773-014-2018-8