Generalized Perturbations in Modified Gravity and Dark Energy

Released on by Jonathan Pearson
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  • Generalized Perturbations in Modified Gravity and Dark Energy Book Detail

  • Author : Jonathan Pearson
  • Release Date : 2013-09-20
  • Publisher : Springer Science & Business Media
  • Genre : Science
  • Pages : 213
  • ISBN 13 : 331901210X
  • File Size : 54,54 MB
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Generalized Perturbations in Modified Gravity and Dark Energy by Jonathan Pearson PDF Summary

Book Description: When predictions of Einstein's theory of General Relativity are compared against observations of our Universe, a huge inconsistency is found. The most popular fix for this inconsistency is to "invent" around 94% of the content of the universe: dark matter and dark energy. The dark energy is some exotic substance responsible for the apparent observed acceleration of the Universe. Another fix is to modify the theory of gravity: it is entirely plausible that Einstein's theory of General Relativity breaks down on cosmological scales, just as Newton's theory of gravity breaks down in the extreme gravitational field of the Sun. There are many alternative theories of gravity, each with the aim of describing observations of our Universe where General Relativity fails. Whether it is dark energy or some modified theory of gravity, it is clear that there is some "dark sector" in the Universe. In this thesis the author constructs a unifying framework for understanding the observational impact of general classes of dark sector theories, by formulating equations of state for the dark sector perturbations.

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Dark Matter and Dark Energy

Dark Matter and Dark Energy

File Size : 90,90 MB
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This book brings together reviews from leading international authorities on the developments in the study of dark matter and dark energy, as seen from both thei