عنوان

Generalized perturbations in modified gravity and dark energy

شماره استاندارد

2146

زبان متن نوشتاري يا گفتاري و مانند آن

English

نام نخستين پديدآور

Pearson ,Jonathan

عنوان اصلي

Generalized perturbations in modified gravity and dark energy

محل نشرو پخش و غیره

Cham

نام ناشر، پخش کننده و غيره

Springer

تاریخ نشرو بخش و غیره

2014

نام خاص و کميت اثر

)xix, 200 pages( : illustrations )some color(.

عنوان فروست

Springer theses

متن يادداشت

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.

عنصر شناسه ای

، Gravitation

عنصر شناسه ای

، Dark energy )Astronomy(

عنصر شناسه ای

، General relativity )Physics

شماره رده

کد نقش

AU

عنصر شناسه اي

Jonathan Pearson

عنصر شناسه اي

NO

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