A solution of the coincidence problem based on the recent galactic core black hole mass density increase

Understand

A mechanism capable to provide a natural solution to two major cosmological problems, i.e.

• the cosmic acceleration and the coincidence problem, is proposed.
• A specific brane-bulk energy exchange mechanism produces a total dark pressure, arising when adding all normal to the brane negative pressures in the interior of galactic core black holes.
• This astrophysically produced negative dark pressure explains cosmic acceleration and why the dark energy today is of the same order to the matter density for a wide range of the involved parameters.