Alleviation of Cosmic Age Problem In Interacting Dark Energy Model

Details Alleviation of Cosmic Age Problem In Interacting Dark Energy Model Alleviation of Cosmic Age Problem In Interacting Dark Energy Model

2008-09-22

arxiv.org/abs/0809.3627v2

Phys. Lett. B 669 (2008) 201

Astronomy and Astrophysics

Astrophysics

12 pages, 3 figures, 5 tables, to appear in PLB

Scientific paper

10.1016/j.physletb.2008.09.055

We investigate the cosmic age problem associated with the old high-$z$ quasar APM 08279 + 5255 and the oldest globular cluster M 107, both being difficult to accommodate in $\Lambda$CDM model. By evaluating the age of the Universe in a model that has an extremely phantom like form of dark energy (DE), we show that simply introducing the dark energy alone does not remove the problem, and the interaction between dark matter (DM) and DE need to be taken into account. Next, as examples, we consider two interacting DE models. It is found that both these two interacting DE Models can predict a cosmic age much greater than that of $\Lambda$CDM model at any redshift, and thus substantially alleviate the cosmic age problem. Therefore, the interaction between DM and DE is the crucial factor required to make the predicted cosmic ages consistent with observations.

Affiliated with

Also associated with

No associations

Rating

Alleviation of Cosmic Age Problem In Interacting Dark Energy Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Alleviation of Cosmic Age Problem In Interacting Dark Energy Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alleviation of Cosmic Age Problem In Interacting Dark Energy Model will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-299214