[Triumf-seminars] TRIUMF Theory Seminar today at 13:00

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Date/Time: Tue 2010-03-09 at 13:00

Location:  Theory Room         

Speaker:   Subinoy Das (UBC)

Title:     Dark matter from neutrino bubble

Abstract: Existence of  dark enrgy and nonzero neutrino mass are two most exciting discoveries of recent years. More excitingly, the similarity between the energy scales of these two phenomena raises the question : "Are  they  related ?".  Standard model neutrinos, in spite of having all the desired properties of  dark matter, are not viable DM candidates because of their excessive free-streaming during the structure formation of Universe.  I will discuss a scenario where the neutrinos have some non-standard interaction with a scalar which opens the possibility of a phase transition in the early universe. As a result of this,  neutrinos get trapped into a stable compact neutrino bubble which as a whole behaves like cold dark matter. I will also discuss  cosmological consequences of such dark matter.



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