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arXiv · 1509.03304

Are black holes in an ekpyrotic phase possible?

J. C. S. Neves
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Abstract

The ekpyrotic phase (a slow contraction cosmic phase before the current expansion phase) manages to solve the main problems of the standard cosmology by means of a scalar field interpreted as a cosmic fluid in the Friedmann equation. Moreover, this phase generates a nearly scale-invariant spectrum of perturbations in agreement with the latest data. Then, the ekpyrotic mechanism is a serious possibility to the inflationary model. In this work, by using the approach of deforming metrics at linear level, we point out that it is impossible to generate a black hole with spherical symmetry supported by an isotropic fluid in this cosmological scenario.

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J. C. S. Neves. 2015-09-10. Are black holes in an ekpyrotic phase possible?. https://doi.org/10.1007/s10509-016-2867-0

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