RE: LHC starting up again
April 5, 2015 at 9:21 pm
(This post was last modified: April 5, 2015 at 9:30 pm by Alex K.)
The names are just for historical reasons, they are almost meaningless. They stand for a collection of phenomena (missing mass in galaxies and clusters, missing mass in CMB observations, accelerated expansion of the universe, flatness of the universe ) which are most easily explained by a small vacuum energy (cosmo constant) and a new neutral massive particle.
The monicker dark is because the missing mass doesn't radiate or absorb photons, nor does the vacuum energy, and "matter" because DM seems to behave like massive particles with an equation of state like pressureless dust, and "energy" because DE has an equation of state of a constant energy density
The monicker dark is because the missing mass doesn't radiate or absorb photons, nor does the vacuum energy, and "matter" because DM seems to behave like massive particles with an equation of state like pressureless dust, and "energy" because DE has an equation of state of a constant energy density
The fool hath said in his heart, There is a God. They are corrupt, they have done abominable works, there is none that doeth good.
Psalm 14, KJV revised edition
