Dark Energy And Large Scale Structure

UoM administered thesis: Phd

  • Authors:
  • Steven Pediani


Currently one of the most exciting problems in cosmology is the nature of dark energy,which is responsible for the late time accelerated expansion of the universe. Darkenergy modifies the distance-redshift relation, and governs the late time evolution ofgravitational potentials in the universe. Therefore by observing large scale structurewe can gain valuable information on the nature of dark energy. In this thesis we examinea particular theory of dark energy, known as elastic dark energy. Using weaklensing and the ISW effect, coupled with CMB and SNIa data, we find lower boundsfor the sound speed of elastic dark energy. We also explore how this model behaves inthe presence of collapsing matter.


Original languageEnglish
Awarding Institution
  • Richard Battye (Supervisor)
Award date31 Dec 2011