Physics – Classical Physics
Scientific paper
May 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21812003m&link_type=abstract
American Astronomical Society, AAS Meeting #218, #120.03; Bulletin of the American Astronomical Society, Vol. 43, 2011
Physics
Classical Physics
Scientific paper
What happens to a dark matter particle trapped in a static gravitational potential of a halo? The obvious answer that it will remain gravitationally bound forever appears to be not quite true for a quantum-mixed particle, like a neutralino, for example. We will show that the particle can gradually and irreversibly escape, or ``evaporate'', from the gravitational well --- the effect that has no counterpart in classical physics. This new effect is not related to the well-known processes such as flavor oscillations, particle decay, quantum tunneling, etc. Further, we investigated how quantum evaporation would affect the structure formation. It was found that the flavor-mixed dark matter model can simultaneously explain two outstanding problems of cosmology, namely the dark halo cusp problem and the sub-structure (the "missing satellites") problem.
[This work is supported by DE-FG02-07ER54940, AST-0708213, NNX-08AL39G.]
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