Sökning: "Cold Dark Matter"

Visar resultat 6 - 7 av 7 uppsatser innehållade orden Cold Dark Matter.

1. 6. Tidal Streams as a Probe of the Milky Way Assembly History

   Master-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation; Lunds universitet/Astronomi - Genomgår omorganisation

   Författare :Espen Kirkesæther Brun; [2016]
   Nyckelord :Astrophysics; Astronomy; Dynamics; Galactic; Tidal Streams; Stellar Streams; Dark Matter; Subhalos; Physics and Astronomy;

   Sammanfattning : The current Lambda Cold Dark Matter cosmology predicts galaxy growth by hierarchical merging, leading to galaxy substructure like tidal streams and dark matter subhalos devoid of stars. The goal of this thesis is to investigate whether tidal stream-subhalo interactions can leave observable gaps in the streams, and at which rate this might happen in a galaxy like the Milky Way. LÄS MER

3. 7. CP violation in QCD, axions and possible connections to dark matter

   Kandidat-uppsats, Lunds universitet/Fysiska institutionen

   Författare :Eric Corrigan; [2013]
   Nyckelord :QCD; axions; CP violation; dark matter; symmetry breaking; Physics and Astronomy;

   Sammanfattning : The strong CP problem and its solution are treated on the undergraduate level. We first review the theoretical background of symmetry and symmetry breaking in particle physics. The Goldstone model is treated for several simple systems: the linear sigma model, the Higgs mechanism and the interpretation of pions as pseudo-Goldstone bosons in QCD. LÄS MER