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| Theoretical Astroparticle Physics |
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Theoretical Astroparticle Physics
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Elementary particle physics relates in many different ways to
fundamental questions about the universe. What is the physical nature
of dark matter that dominates the dynamics of galaxies and cosmic
structures? How should we understand dark energy that causes
accelerated expansion of the universe? Why is there so much more
matter than anti-matter in the universe? What is the role of neutrinos
in cosmology and astrophysics and especially in supernova explosions?
Where are the astrophysical accelerators, which are responsible for the high-energy cosmic rays?
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The theoretical Astroparticle group is concerned with these fundamental issues. One focus is on studies that suggest that the tiny mass of weakly interacting neutrinos is responsible for the cosmic asymmetry between matter and antimatter, and therefore also responsible for our existence ("leptogenesis").
Another main focus is research on the role of novel particles as dark matter that interact even weaker than neutrinos.
Furthermore, the Working Group uses astrophysical and cosmological observations to test particle physics hypotheses.
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