PIRSA:08120030 Conference Cosmology

DOI10.48660/08120030

Conference/School: Young Researchers Conference 2008

Schmidt, F. (2008). Structure Formation in Modified Gravity. Perimeter Institute. https://pirsa.org/08120030

Schmidt, Fabian. Structure Formation in Modified Gravity. Perimeter Institute, Dec. 09, 2008, https://pirsa.org/08120030 

@misc{ pirsa_PIRSA:08120030,
  doi = {10.48660/08120030},
  url = {https://pirsa.org/08120030},
  author = {Schmidt, Fabian},
  keywords = {Cosmology},
  language = {en},
  title = {Structure Formation in Modified Gravity},
  publisher = {Perimeter Institute},
  year = {2008},
  month = {dec},
  note = {PIRSA:08120030 see, \url{https://pirsa.org}}
}

Abstract

Instead of adding another dark component to the energy budget of the Universe in trying to explain the accelerated expansion, one can ask whether the cause is in fact the laws of gravity itself on the largest scales. In this talk, I will consider a sub-class of so-called f(R) gravity theories which closely follow the LambdaCDM expansion history, while at the same time evading tight Solar System constraints on gravity. I will present new results from cosmological N-body simulations which consistently solve for the modified gravitational force. In particular, I will discuss the effects of modified gravity on structure formation, dark matter halo properties, and cosmological observables.

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