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Teleparallel Gravity and Phenomenology of Dark Matter

Khaloei, Elahe | 2016

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 49014 (04)
  4. University: Sharif University of Technology
  5. Department: Physics
  6. Advisor(s): Rahvar, Sohrab; Baghram, Shant
  7. Abstract:
  8. One of the biggest challenges facing cosmologists is finding the nature of dark matter. The cosmological observations, like the Rotation Curve, Gravitational Weak Lensing and Cosmic Microwave Background radiation indicate that baryonic matter alone cannot explain the density of matter in the universe. In the context of standard cosmological models, it means that the universe is made of an unknown component(Dark Matter), which aprroximately has 27% of total energy-momentum of the universe. The Modify Gravity and General Relativity are alternative theories that introduced to describe this observation. In This thesis, we introduce the issue of the measurements of accelerated observers in Minkowski space-time that rise in to the beyond postulate of locality that is a step towards introducing nonlocal special theory of relativity. Inertia and gravitation are intimately connected in accordance with the equivalence principle. In order to arrive indirectly at a nonlocal gravity, to explain nature of dark matter , we work within framework of teleparallel gravity.Teleparallel gravity, a gauge theory for the translation group, is an alternative theory, fully equivalent to general relativity that renders field equations of gravity in close analogy with Maxwell’s equations. This analogy help us to present Nonlocal gravity. The linear approximation of this theory is thoroughly examined. It is shown that dark matter can be simulate in the linear regime. finally we introduce the gravitational dipole moment to present phenomenology of nonlocal gravity
  9. Keywords:
  10. General Relativity Theory ; Dark Matter ; Special Relativity Theory ; Nonlocality ; Teleparallel Gravity ; Gravitational Dipole Moment

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