Large Scale Structure Of The Universe And Cosmological Perturbation Theory
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Dark Energy and the Formation of the Large Scale Structure of the Universe
| Author | : Jérôme Gleyzes |
| Publisher | : Springer |
| Total Pages | : 124 |
| Release | : 2016-06-28 |
| Genre | : Science |
| ISBN | : 3319412108 |
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.
Delta N Formalism In Cosmological Perturbation Theory
| Author | : Ali Akbar Abolhasani |
| Publisher | : World Scientific |
| Total Pages | : 182 |
| Release | : 2019-01-30 |
| Genre | : Science |
| ISBN | : 9813238771 |
Early Universe cosmology is an active area of research and cosmic inflation is a pillar of modern cosmology. Among predictions of inflation, observationally the most important one is the generation of cosmological perturbations from quantum vacuum fluctuations that source all inhomogeneous structures in the Universe, not to mention the large-scale structures such as clusters of galaxies.Cosmological perturbation theory is the basic tool to study the perturbations generated from inflation. There are a few different approaches to primordial cosmological perturbations. In the conventional approach one perturbs the field equations and after quantizing the perturbations by the use of the corresponding action, one calculates the power spectrum of cosmological observables. This approach extends to higher order perturbations such as bispectrum etc., but the analysis becomes increasingly difficult.The delta N formalism, the topic of this book, is an alternative approach. The novelty of this approach is that, under the condition that the scale of interest is very large so that the spatial derivatives may be ignored in the dynamics, it can be applied to all orders in perturbation theory and has a rigorous foundation in general relativity. Thanks to the fact that one can evaluate perturbations with only the knowledge of background solutions, it is proved to be much easier than the conventional approach in evaluating higher order effects in many cases.
The Large-Scale Structure of the Universe
| Author | : P. J. E. Peebles |
| Publisher | : Princeton University Press |
| Total Pages | : 448 |
| Release | : 2020-09-15 |
| Genre | : Science |
| ISBN | : 0691206716 |
The classic account of the structure and evolution of the early universe from Nobel Prize–winning physicist P. J. E. Peebles An instant landmark on its publication, The Large-Scale Structure of the Universe remains the essential introduction to this vital area of research. Written by one of the world's most esteemed theoretical cosmologists, it provides an invaluable historical introduction to the subject, and an enduring overview of key methods, statistical measures, and techniques for dealing with cosmic evolution. With characteristic clarity and insight, P. J. E. Peebles focuses on the largest known structures—galaxy clusters—weighing the empirical evidence of the nature of clustering and the theories of how it evolves in an expanding universe. A must-have reference for students and researchers alike, this edition of The Large-Scale Structure of the Universe introduces a new generation of readers to a classic text in modern cosmology.
Cosmological Inflation and Large-Scale Structure
| Author | : Andrew R. Liddle |
| Publisher | : Cambridge University Press |
| Total Pages | : 420 |
| Release | : 2000-04-13 |
| Genre | : Science |
| ISBN | : 9780521575980 |
A thorough and up-to-date graduate textbook on the most promising theory of the universe - inflationary cosmology.
Development of Large Scale Structure in the Universe
| Author | : J. P. Ostriker |
| Publisher | : Cambridge University Press |
| Total Pages | : 90 |
| Release | : 1991 |
| Genre | : Science |
| ISBN | : 9780521423618 |
This book considers modern and fascinating theories of the large scale models of the universe.
Formation of Structure in the Universe
| Author | : Avishai Dekel |
| Publisher | : Cambridge University Press |
| Total Pages | : 492 |
| Release | : 1999-04-15 |
| Genre | : Science |
| ISBN | : 9780521586320 |
This advanced textbook provides an up-to-date and comprehensive introduction to the very active field of structure formation in cosmology. It is written by eleven world-leading authorities. Written in a clear and pedagogical style appropriate for graduate students in astronomy and physics, this textbook introduces the reader to a wide range of exciting topics in contemporary cosmology: from recent advances in redshift surveys, to the latest models in gravitational lensing and cosmological simulations. The authors are all world-renowned experts both for their research and teaching skills. In the fast-moving field of structure formation, this book provides advanced undergraduate and graduate students with a welcome textbook which unites the latest theory and observations.
Large Scale Structure In The Universe - Proceedings Of The International Workshop
| Author | : Jan P Mucket |
| Publisher | : World Scientific |
| Total Pages | : 394 |
| Release | : 1995-10-31 |
| Genre | : |
| ISBN | : 9814548936 |
This volume documents the theoretical and observational results and arguments in favour of (or against) the most preferred models of structure formation. New observational results of the large scale distribution of matter are confronted with recent theories on the origin and evolution of structure in the universe.
Structure Formation in the Universe
| Author | : Robert G. Crittenden |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 400 |
| Release | : 2001-11-30 |
| Genre | : Medical |
| ISBN | : 9781402001550 |
Proceedings of the NATO Advanced Study Institute, Cambridge, UK, 26th July-6th August 1999
The Large-scale Structure of the Universe
| Author | : Yookyung Noh |
| Publisher | : |
| Total Pages | : 127 |
| Release | : 2013 |
| Genre | : |
| ISBN | : |
The usefulness of large-scale structure as a probe of cosmology and structure formation is increasing as large deep surveys in multi-wavelength bands are becoming possible. The observational analysis of large-scale structure guided by large volume numerical simulations are beginning to offer us complementary information and crosschecks of cosmological parameters estimated from the anisotropies in Cosmic Microwave Background (CMB) radiation. Understanding structure formation and evolution and even galaxy formation history is also being aided by observations of different redshift snapshots of the Universe, using various tracers of large-scale structure. This dissertation work covers aspects of large-scale structure from the baryon acoustic oscillation scale, to that of large scale filaments and galaxy clusters. First, I discuss a large- scale structure use for high precision cosmology. I investigate the reconstruction of Baryon Acoustic Oscillation (BAO) peak within the context of Lagrangian perturbation theory, testing its validity in a large suite of cosmological volume N-body simulations. Then I consider galaxy clusters and the large scale filaments surrounding them in a high resolution N-body simulation. I investigate the geometrical properties of galaxy cluster neighborhoods, focusing on the filaments connected to clusters. Using mock observations of galaxy clusters, I explore the the correlations of scatter in galaxy cluster mass estimates from multi-wavelength observations and different measurement techniques. I also examine the sources of the correlated scatter by considering the intrinsic and environmental properties of clusters.
