Cosmological Implications of Co-Decaying Dark Matter
Date of Award
May 2020
Degree Type
Dissertation
Degree Name
Doctor of Philosophy (PhD)
Department
Physics
Advisor(s)
Gary S. Watson
Keywords
Cosmology, Dark Matter, Primordial Black Holes, Structure Formation
Subject Categories
Physical Sciences and Mathematics
Abstract
We will discuss the cosmological implications of the Co-Decaying Dark Matter Model–a recently proposed mechanism for depleting the density of dark matter through the decay of nearly degenerate particles. This model generically predicts the existence of an Early Matter Dominated phase of universe evolution. We will show that this phase promotes sub-structure growth that can survive free-streaming effects to remain as compact micro- halos to the present era. In addition to micro-halos, Co-Decaying Dark Matter can foster an early universe environment conducive to the formation of near solar-mass black holes that can account for an appreciable fraction of the total present-day Dark Matter abundance.
Access
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Recommended Citation
Melcher, Brandon Scott, "Cosmological Implications of Co-Decaying Dark Matter" (2020). Dissertations - ALL. 1250.
https://surface.syr.edu/etd/1250
