Generalized Perturbations in Modified Gravity and Dark Energy

By:

Jonathan Pearson

Format:

Hardback

Series:

Springer Theses

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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.

Author Biography:

Jonathan Pearson obtained his PhD in Theoretical Cosmology at Jodrell Bank Centre for Astrophysics, at the University of Manchester. His research topics include: domain wall network dynamics, constructing gauged cosmic vortons, inhomogeneous universes and constructing a formalism to use observational data to constrain modified gravity theories.

Release date NZ

October 9th, 2013

Author

Jonathan Pearson

Audience

Professional & Vocational

Illustrations

14 Illustrations, color; 3 Illustrations, black and white; XIX, 200 p. 17 illus., 14 illus. in color.

Pages

200

Series

Springer Theses

Dimensions

155x235x19

ISBN-13

9783319012094

Product ID

21467385

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