Chameleon dark matter stars
arXiv:1305.1087 · doi:10.1103/PhysRevD.88.063005
Abstract
We consider static, spherically symmetric equilibrium configurations consisting of fermionic dark matter nonminimally coupled to dark energy in the form of a quintessence scalar field. With the scalar field coupling function, the form of which is taken to meet cosmological observations, we estimate the effect of such a nonminimal coupling on the properties of dark matter compact configurations. We show that the masses and sizes of the resulting chameleon dark matter stars are smaller than those of systems with no field present.
10 pages, 2 figures, Introduction revised, Conclusion extended, choice of the interaction Lagrangian discussed in detail, some other minor corrections to content, new references added, version published in PRD. arXiv admin note: text overlap with arXiv:1308.3206
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