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arXiv · 1011.2849

Masking a singularity with k-essence fields in an emergent gravity metric

Debashis Gangopadhyay·Sourav Sen Choudhury
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Abstract

It is known that dynamical solutions of the $k$-essence equation of motion change the metric for the perturbations around these solutions and the perturbations propagate in an emergent spacetime with metric $\tilde G^{μν}$ different from the gravitational metric $g^{μν}$. We show that for observers travelling with the perturbations, there exist field configurations for the lagrangian $L=[{1\over 2}g^{μν}\nabla_μϕ\nabla_νϕ]^{1\over 2}$ for which a singularity in the gravitational metric $g^{μν}$ can be masked or hidden for such observers. This is shown for the Schwarzschild and the Reissner-Nordstrom metrics.

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Debashis Gangopadhyay, Sourav Sen Choudhury. 2011-03-31. Masking a singularity with k-essence fields in an emergent gravity metric. https://arxiv.org/abs/1011.2849

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