Rastall's theory of gravity: Spherically symmetric solutions and the stability problem
arXiv:2007.01945 · doi:10.1007/s10714-021-02791-6
Abstract
We study the stability of static, spherically symmetric solutions of Rastall's theory in the presence of a scalar field with respect to spherically symmetric perturbations. It is shown that the stability analysis is inconsistent in the sense that linear time-dependent perturbations cannot exist, and we can conclude that these solutions are stable. Possible reasons for this inconsistency are discussed.
arXiv comment9 pages, no figures
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