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Generalized perturbations in modified gravity and dark energy / Jonathan Pearson.

By: Material type: TextTextSeries: Springer thesesPublication details: Switzerland : Springer, 2014.Description: xx, 200 p. ; illISBN:
  • 9783319012094
Subject(s): DDC classification:
  • 23 P361 521.1
Contents:
1. Introduction to Gravitational Theories and Cosmology-- 2. The Effective Action Formalism for Cosmological Perturbations-- 3. Metric Only and First Order Scalar Field Theory-- 4. High Derivative Theories-- 5. Explicit Theories-- 6. Connections to Massive gravity-- 7. Generalized Fluid Description-- 8. Observational Signatures of Generalized Cosmological Perturbations-- 9. Discussion and Final Remarks-- About the Author-- References--
Summary: 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 gr.
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Holdings
Item type Current library Call number Status Date due Barcode Item holds
Books ISI Library, Kolkata 521.1 P361 (Browse shelf(Opens below)) Available 135374
Total holds: 0

Doctoral thesis accepted by Manchester University, UK.

Includes references.

1. Introduction to Gravitational Theories and Cosmology--
2. The Effective Action Formalism for Cosmological Perturbations--
3. Metric Only and First Order Scalar Field Theory--
4. High Derivative Theories--
5. Explicit Theories--
6. Connections to Massive gravity--
7. Generalized Fluid Description--
8. Observational Signatures of Generalized Cosmological Perturbations--
9. Discussion and Final Remarks--

About the Author--
References--

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 gr.

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