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Dissipative dark matter explains rotation curves
- Physics
- 2015
Dissipative dark matter, where dark matter particles interact with a massless (or very light) boson, is studied. Such dark matter can arise in simple hidden sector gauge models, including those…
Collapsed Dark Matter Structures.
- PhysicsPhysical review letters
- 2018
It is shown that a simple model where dark matter is charged under a "dark electromagnetism" can allow dark matter to form gravitationally collapsed objects with characteristic mass scales much smaller than that of a Milky-Way-type galaxy.
SUPERMASSIVE BLACK HOLES FROM ULTRA-STRONGLY SELF-INTERACTING DARK MATTER
- Physics
- 2014
We consider the cosmological consequences if a small fraction ( f ≲ 0.1 ?> ) of the dark matter is ultra-strongly self-interacting, with an elastic self-interaction cross section per unit mass &sgr;…
Interacting dark sector and precision cosmology
- Physics
- 2018
We consider a recently proposed model in which dark matter interacts with a thermal background of dark radiation. Dark radiation consists of relativistic degrees of freedom which allow larger values…
Make dark matter charged again
- Physics
- 2017
We revisit constraints on dark matter that is charged under a U(1) gauge group in the dark sector, decoupled from Standard Model forces. We find that the strongest constraints in the literature are…
New Phenomenology from Asymmetric Dark Matter
- Physics
- 2015
The properties of dark matter — its microphysical form, and its cosmological origin and history — are one of the most important mysteries in fundamental physics. So far, evidence for matter beyond…
Dark matter production after inflation and constraints
- Physics
- 2017
A multitude of evidence has accumulated in support of the existence of dark matter in our Universe. There are already plenty of dark matter candidates. However, we do not know yet whether any of…
Solving the small-scale structure puzzles with dissipative dark matter
- Physics
- 2016
Small-scale structure is studied in the context of dissipative dark matter, arising for instance in models with a hidden unbroken Abelian sector, so that dark matter couples to a massless dark…
Plasma dark matter direct detection
- Physics
- 2016
Dark matter in spiral galaxies like the Milky Way may take the form of a dark plasma. Hidden sector dark matter charged under an unbroken U(1)′ gauge interaction provides a simple and well defined…
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