Abstract
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 language | English |
|---|---|
| Article number | 2379 |
| Pages (from-to) | 1-15 |
| Number of pages | 15 |
| Journal | European Physical Journal C |
| Volume | 73 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2013 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)
Cite this
A solution of the coincidence problem based on the recent galactic core black hole mass density increase. / Kofinas, Georgios; Zarikas, Vasilios.
In: European Physical Journal C, Vol. 73, No. 4, 2379, 2013, p. 1-15.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A solution of the coincidence problem based on the recent galactic core black hole mass density increase
AU - Kofinas, Georgios
AU - Zarikas, Vasilios
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
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UR - http://www.scopus.com/inward/citedby.url?scp=84875552718&partnerID=8YFLogxK
U2 - 10.1140/epjc/s10052-013-2379-9
DO - 10.1140/epjc/s10052-013-2379-9
M3 - Article
VL - 73
SP - 1
EP - 15
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 4
M1 - 2379
ER -