paper

Wormhole solutions supported by interacting dark matter and dark energy

arXiv:1308.3206 · doi:10.1103/PhysRevD.89.064002

Abstract

We show that the presence of a nonminimal interaction between dark matter and dark energy may lead to a violation of the null energy condition and to the formation of a configuration with nontrivial topology (a wormhole). In this it is assumed that both dark matter and dark energy satisfy the null energy condition, a violation of which takes place only in the inner high-density regions of the configuration. This is achieved by assuming that, in a high-density environment, a nonminimal coupling function changes its sign in comparison with the case where dark matter and dark energy have relatively low densities which are typical for a cosmological background. For this case, we find regular static, spherically symmetric solutions describing wormholes supported by dark matter nonminimally coupled to dark energy in the form of a quintessence scalar field.

13 pages, 3 figures, minor corrections to content, new figure and reference added, version published in PRD. arXiv admin note: text overlap with arXiv:1305.1087

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