Simulations of Dark Energy Cosmologies
Simulations of Dark Energy Cosmologies

Author: Elise Jennings

Publisher: Springer Science & Business Media

Published: 2012-05-27

Total Pages: 117

ISBN-13: 3642293395

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A major outstanding problem in physics is understanding the nature of the dark energy that is driving the accelerating expansion of the Universe. This thesis makes a significant contribution by demonstrating, for the first time, using state-of-the-art computer simulations, that the interpretation of future galaxy survey measurements is far more subtle than is widely assumed, and that a major revision to our models of these effects is urgently needed. The work contained in the thesis was used by the WiggleZ dark energy survey to measure the growth rate of cosmic structure in 2011 and had a direct impact on the design of the surveys to be conducted by the European Space Agency's Euclid mission, a 650 million euro project to measure dark energy.

Dark Energy
Dark Energy

Author: Luca Amendola

Publisher: Cambridge University Press

Published: 2010-06-10

Total Pages: 507

ISBN-13: 0521516005

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Introducing the theoretical ideas, observational methods and results in dark energy, this textbook is a thorough introduction to dark energy for graduate courses.

Dark Matter and Dark Energy
Dark Matter and Dark Energy

Author: Sabino Matarrese

Publisher: Springer Science & Business Media

Published: 2011-02-10

Total Pages: 413

ISBN-13: 9048186854

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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 their cosmological and particle physics side. Studying the physical and astrophysical properties of the dark components of our Universe is a crucial step towards the ultimate goal of unveiling their nature. The work developed from a doctoral school sponsored by the Italian Society of General Relativity and Gravitation. The book starts with a concise introduction to the standard cosmological model, as well as with a presentation of the theory of linear perturbations around a homogeneous and isotropic background. It covers the particle physics and cosmological aspects of dark matter and (dynamical) dark energy, including a discussion of how modified theories of gravity could provide a possible candidate for dark energy. A detailed presentation is also given of the possible ways of testing the theory in terms of cosmic microwave background, galaxy redshift surveys and weak gravitational lensing observations. Included is a chapter reviewing extensively the direct and indirect methods of detection of the hypothetical dark matter particles. Also included is a self-contained introduction to the techniques and most important results of numerical (e.g. N-body) simulations in cosmology. " This volume will be useful to researchers, PhD and graduate students in Astrophysics, Cosmology Physics and Mathematics, who are interested in cosmology, dark matter and dark energy.

Dark Matter In Astroparticle And Particle Physics - Proceedings Of The 6th International Heidelberg Conference
Dark Matter In Astroparticle And Particle Physics - Proceedings Of The 6th International Heidelberg Conference

Author: Hans Volker Klapdor-kleingrothaus

Publisher: World Scientific

Published: 2008-05-09

Total Pages: 654

ISBN-13: 9814471178

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Dark matter remains one of the central mysteries in modern physics, although modern astronomical observations and particle physics experiments are providing vital clues in uncovering its true nature. The Dark2007 Conference brought together world-leading researchers in both astrophysics and particle physics, providing them with an opportunity to present their latest results and engage in discussion on their meaning and future direction. This book is important in its field, as it provides a vital snapshot of the seemingly disparate areas of dark matter research and provides an overview of current ideas and future directions.

Structure Formation in Modified Gravity Cosmologies
Structure Formation in Modified Gravity Cosmologies

Author: Alexandre Barreira

Publisher: Springer

Published: 2016-05-03

Total Pages: 234

ISBN-13: 3319336967

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This unique thesis covers all aspects of theories of gravity beyond Einstein’s General Relativity, from setting up the equations that describe the evolution of perturbations, to determining the best-fitting parameters using constraints like the microwave background radiation, and ultimately to the later stages of structure formation using state-of-the-art N-body simulations and comparing them to observations of galaxies, clusters and other large-scale structures. This truly ground-breaking work puts the study of modified gravity models on the same footing as the standard model of cosmology. Since the discovery of the accelerating expansion of the Universe, marked by the awarding of the 2011 Nobel Prize in Physics, there has been a growing interest in understanding what drives that acceleration. One possible explanation lies in theories of gravity beyond Einstein’s General Relativity. This thesis addresses all aspects of the problem, an approach that is crucial to avoiding potentially catastrophic biases in the interpretation of upcoming observational missions.

Impact of Gravitational Lensing on Cosmology (IAU S225)
Impact of Gravitational Lensing on Cosmology (IAU S225)

Author: International Astronomical Union. Symposium

Publisher: Cambridge University Press

Published: 2005-09-05

Total Pages: 478

ISBN-13: 9780521851961

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This book contains the proceedings of the International Astronomical Union Symposium no. 225, held in July 2004 at the Ecole Polytechnique Federale de Lausanne (EPFL), in Lausanne, Switzerland. The meeting focused on the applications of gravitational lensing to cosmological physics, and this book summarizes the most recent theoretical and observational developments. With chapters written by leading scientists in the field, this is a valuable resource for professional astronomers and graduate students in astronomy, physics and astro-particle physics.

Paths to Dark Energy
Paths to Dark Energy

Author: Gene Byrd

Publisher: Walter de Gruyter

Published: 2012-07-30

Total Pages: 416

ISBN-13: 3110258781

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This work provides the current theory and observations behind the cosmological phenomenon of dark energy. The approach is comprehensive with rigorous mathematical theory and relevant astronomical observations discussed in context. The book treats the background and history starting with the new-found importance of Einstein’s cosmological constant (proposed long ago) in dark energy formulation, as well as the frontiers of dark energy. The authors do not presuppose advanced knowledge of astronomy, and basic mathematical concepts used in modern cosmology are presented in a simple, but rigorous way. All this makes the book useful for both astronomers and physicists, and also for university students of physical sciences.

Theoretical and Observational Cosmology
Theoretical and Observational Cosmology

Author: Marc Lachièze-Rey

Publisher: Springer Science & Business Media

Published: 1999-09-30

Total Pages: 428

ISBN-13: 9780792359456

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Proceedings of the NATO Advanced Study Institute, held in Cargèse, France from 17-29 August 1998

Dark Energy and the Formation of the Large Scale Structure of the Universe
Dark Energy and the Formation of the Large Scale Structure of the Universe

Author: Jérôme Gleyzes

Publisher: Springer

Published: 2016-06-28

Total Pages: 124

ISBN-13: 3319412108

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This thesis presents several significant new results that shed light on two major puzzles of modern cosmology: the nature of inflation, the very early phase of the universe that is thought to have given rise to the large-scale structures that we observe today; and that of the current accelerated expansion. In particular, it develops a clean method for characterizing linear cosmological perturbations for general theories where gravity is modified and/or affected by a new component, called dark energy, responsible for the accelerated expansion. It proposes a new extension to what were long thought to be the most general scalar field theories devoid of instabilities, and demonstrates the robustness of the relation between the energy scale of inflation and the predicted amplitude of gravitational waves. Finally, it consolidates a set of consistency relations between correlation functions of the cosmological density field and investigates the phenomenological consequences of their potential violation. Presented in a clear, succinct and rigorous style, each of these original results is both profound and important and will leave a deep mark on the field.