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

Georgios Kofinas, Vasilios Zarikas

Research output: Contribution to journalArticle

5 Citations (Scopus)


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. An exciting result of the analysis is that the recent rise of the galactic core black hole mass density causes the recent passage from cosmic deceleration to acceleration. Finally, it is worth mentioning that this work corrects a wide spread fallacy among brane cosmologists, i.e. that escaping gravitons result in positive dark pressure.

Original languageEnglish
Article number2379
Pages (from-to)1-15
Number of pages15
JournalEuropean Physical Journal C
Issue number4
Publication statusPublished - Apr 1 2013


ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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