Speaker
Description
Cosmological energy density of dark matter (DM) particles is
determined by their interaction strength, their mass, and the universe
expansion law. The frozen density of DM particles is determined by the
Zeldovich kinetic equation. In the canonical theory a natural
candidate for dark matter, the lightest supersymmetric particle
(LSP), is practically excluded by the recent lower bound on its mass
obtained at LHC. In this connection it is interesting to consider
modified gravity theories which could lead to significant deviation of the
expansion regime from that in the conventional cosmology. As a
realistic example we discuss $R^2$ inflationary model, suggested by
Starobinsky. We have shown that particle production by oscillating
curvature (scalaron) could significantly diminish the density of
stable relics. Depending on the channel of the scalaron decay the
proper value of the mass of the LSP-type particle, allowing it to make
the cosmological dark matter, can be in the range from $10^6$ GeV up to $10^{12}$ GeV.
Details
N/A
| Is this abstract from experiment? | No |
|---|---|
| Name of experiment and experimental site | N/A |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | No |
