Galactic Halos and Black Holes in Non-Canonical Scalar Field Theories

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dc.creatorAkhoury, Ratindranath
dc.creatorGauthier, Christopher S.
dc.date2008-04-22
dc.date2008-06-03
dc.date.accessioned2026-07-07T09:42:01Z
dc.date.available2026-07-07T09:42:01Z
dc.descriptionWe consider static spherically symmetric solutions of a general scalar field theory with non-standard kinetic energy coupled to gravity with a view to explain dark matter halos as a coherent state of the scalar field. Consistent solutions are found with a smooth scalar profile which can describe observed rotation curves. Some of the solutions have negative scalar energy density near the origin though the total energy is positive definite. The solutions with positive energy density everywhere have a steeper rotation curve near the origin than those that don't. We also reconsider the no scalar hair theorems for black holes with emphasis on asymptotic boundary conditions and super-luminal propagation. Some modifications and extensions of previous analyses are discussed.
dc.description15 pages, v2: references added, revised comments concerning the L ~ r^2 case
dc.identifierhttps://arxiv.org/abs/0804.3437
dc.identifierhttp://arxiv.org/abs/0804.3437
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162034
dc.subjectHigh Energy Physics - Theory
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleGalactic Halos and Black Holes in Non-Canonical Scalar Field Theories
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