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Generalized Perturbations in Modified Gravity and Dark Energy

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 ene...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Pearson, Jonathan (Autor)
Autor Corporativo: SpringerLink (Online service)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Cham : Springer International Publishing : Imprint: Springer, 2014.
Edición:1st ed. 2014.
Colección:Springer Theses, Recognizing Outstanding Ph.D. Research,
Temas:
Acceso en línea:Texto Completo

MARC

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245 1 0 |a Generalized Perturbations in Modified Gravity and Dark Energy  |h [electronic resource] /  |c by Jonathan Pearson. 
250 |a 1st ed. 2014. 
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300 |a XIX, 200 p. 17 illus., 14 illus. in color.  |b online resource. 
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490 1 |a Springer Theses, Recognizing Outstanding Ph.D. Research,  |x 2190-5061 
505 0 |a Gravitational theories and cosmology -- The effective action formalism for cosmological perturbations -- Metric only and first order scalar field theory -- High derivative theories -- Explicit theories -- Connections to massive gravity -- Generalized fluid description -- Observational signatures of generalized cosmological perturbations -- Discussion and final remarks. 
520 |a 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. 
650 0 |a Gravitation. 
650 0 |a Cosmology. 
650 0 |a Mathematical physics. 
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