Mathematics – Mathematical Physics
Scientific paper
Jul 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1256..339l&link_type=abstract
GRAVITATIONAL PHYSICS: TESTING GRAVITY FROM SUBMILLIMETER TO COSMIC: Proceedings of the VIII Mexican School on Gravitation and M
Mathematics
Mathematical Physics
1
Accretion, Dark Matter, Black Holes, Lagrangian Field Theory, General Relativity, Infall, Accretion, And Accretion Disks, Dark Energy, Galactic Nuclei, Circumnuclear Matter, And Bulges, Lagrangian And Hamiltonian Approach, Fundamental Problems And General Formalism
Scientific paper
We present the accretion of a phantom scalar field into a black hole for various scalar field potentials in the full non-linear regime. Our results are based on the use of numerical methods and show that for all the cases studied the black hole's apparent horizon mass decreases. We explore a particular subset of the parameter space and from our results we conclude that this is a very efficient black hole shrinking process because the time scales of the area reduction of the horizon are short. We show that the radial equation of state of the scalar field depends strongly on the space and time, with the condition ω = p/ρ>-1, as opposed to a phantom fluid at cosmic scales that allows ω<-1.
Gonzalez Jose A.
Guzman Siddharta F.
Lora-Clavijo F. D.
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