Recently a nice review article appeared in arxivarXiv:0811.4684 by Perivolaropoulos from Greece.
The title is 6 puzzles for LCDM .In this article author pay attention to 6 problems /observational ones/that the LCDM model have problem with them.
In literature always we confront with the two problems of fine tuning and coincidence problem for LCDM ,but there are more to confront.
1)Large scale velocity flow: LCDM predicts smaller amplitude and scale for the flow.
2)Brightness of type I SuperNova at high redshifts :LCDM predicts fainter SuperNova in high redshifts.
3)Emptiness of voids:LCDM predicts more dwarf or irregular galaxies in voids.
4)Profile of Halo clusters:LCDM predicts low and shallower concentration and density.
5)Profile of galaxy halos:LCDM predicts cuspy core and low outer density while lensing and other observations predicts central core of constant density.
6)Size able population of disk galaxies:LCDM predicts less disk galaxies.
This are really interesting probes for dark energy problem
1 comment:
It was a nice post. Thanks Shant!
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