Interacting Dark Energy And The Expansion Of The Universe
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Interacting Dark Energy And The Expansion Of The Universe
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Author : Alexander S. Silbergleit
language : en
Publisher: Springer
Release Date : 2017-04-22
Interacting Dark Energy And The Expansion Of The Universe written by Alexander S. Silbergleit and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-22 with Science categories.
This book presents a high-level study of cosmology with interacting dark energy and no additional fields. It is known that dark energy is not necessarily uniform when other sources of gravity are present: interaction with matter leads to its variation in space and time. The present text studies the cosmological implications of this circumstance by analyzing cosmological models in which the dark energy density interacts with matter and thus changes with the time. The book also includes a translation of a seminal article about the remarkable life and work of E.B. Gliner, the first person to suggest the concept of dark energy in 1965.
Dark Matter And Dark Energy
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Author : Brian Clegg
language : en
Publisher: Icon Books
Release Date : 2019-08-08
Dark Matter And Dark Energy written by Brian Clegg and has been published by Icon Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-08-08 with Science categories.
'Clear and compact ... It's hard to fault as a brief, easily digestible introduction to some of the biggest questions in the Universe' Giles Sparrow, BBC Four's The Sky at Night , Best astronomy and space books of 2019: 5/5 All the matter and light we can see in the universe makes up a trivial 5 per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. That 'something' is dark matter - invisible material in five times the quantity of the familiar stuff of stars and planets. By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. Across the universe, this requires enough energy that the equivalent mass would be nearly fourteen times greater than all the visible material in existence. Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.
Sources And Detection Of Dark Matter And Dark Energy In The Universe
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Author : David B. Cline
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Sources And Detection Of Dark Matter And Dark Energy In The Universe written by David B. Cline and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Science categories.
Dark matter research is one of the most fascinating and active fields among current high-profile scientific endeavours. It holds the key to all major breakthroughs to come in the fields of cosmology and astroparticle physics. The present volume is particularly concerned with the sources and the detection of dark matter and dark energy in the universe and will prove to be an invaluable research tool for all scientists who work in this field.
Dark Side Of The Universe
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Author : Iain Nicolson
language : en
Publisher:
Release Date : 2007-03-20
Dark Side Of The Universe written by Iain Nicolson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-03-20 with Science categories.
Once we thought the universe was filled with shining stars, dust, planets, and galaxies. We now know that more than 98 percent of all matter in the universe is dark. It emits absolutely nothing yet bends space and time; keeps stars speeding around galaxies; and determines the fate of the universe. But dark matter is only part of the story. Scientists have recently discovered that the expansion of the universe is speeding up, driven by a mysterious commodity called dark energy. Depending on what dark matter and energy happen to be, our seemingly quiet universe could end its days in a Big Rip, tearing itself apart, or a Big Crunch, collapsing down to a universe the size of nothing, ready to be reincarnated in a Big Bang once again. For the general reader and armchair astronomer alike, Iain Nicolson’s fascinating account shows how our ideas about the nature and the content of the universe have developed. He highlights key discoveries, explains underlying concepts, and examines current thinking on dark matter and dark energy. He describes techniques that astronomers use to explore the remote recesses of the cosmos in their quest to understand its composition, evolution, and ultimate fate.
The Invisible Universe Dark Matter And Dark Energy
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Author : Eleftherios Papantonopoulos
language : en
Publisher: Springer
Release Date : 2007-08-01
The Invisible Universe Dark Matter And Dark Energy written by Eleftherios Papantonopoulos and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-08-01 with Science categories.
The nature and essence of Dark Matter and Dark Energy have become the central issue in modern cosmology over the past years. This extensive volume, an outgrowth of a topical and tutorial summer school, has been set up with the aim of constituting an advanced-level, multi-authored textbook which meets the needs of both postgraduate students and young researchers in the fields of modern cosmology and astrophysics.
Early Universe Cosmology And Dark Energy
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Author : Elisa Gouvêa Mauricio Ferreira
language : en
Publisher:
Release Date : 2017
Early Universe Cosmology And Dark Energy written by Elisa Gouvêa Mauricio Ferreira and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
"In this thesis we address two of the most outstanding problems in cosmology: the singularity problem and the late acceleration of the universe. In the first part, we address the singularity problem that appears in the context of bouncing cosmologies, and suggest a formalism based on the AdS/CFT correspondence to track the evolution of cosmological perturbations in the presence of a space-like singularity that appears in a specific realization of a deformed AdS space-time. Our construction sets the formalism for the evolution of a scalar field and the curvature perturbations on a regularized field theory living in the boundary of this space-time and shows that their momentum dependence is preserved, while a finite particle production occurs. In the second part, we show two works that give a contribution to the huge effort to unravel the nature of dark energy. In those, we focus in testing a model of dark energy where an interaction with dark matter is allowed. This dynamical model has impacts on the evolution of the parameters that describe our universe and we test these using the latest cosmological observations. We use data from the Cosmic Microwave Background, Baryon Acoustic Oscillations (BAO) and type Ia supernovae, and find good agreement with observations, putting constraints in the cosmological parameters. We address the recently found deviation from LCDM in high-redshifts found in measurements of the BAO of the Lyman-alpha forest from quasars. We show that Hubble parameter and angular distance at high-z for the interacting model have a better concordance with the ones obtained by the BOSS collaboration than the LCDM model, and that adding this data set improves the global fit of the model, although with low statistical significance." --
Invisible Universe The Dark Matter Dark Energy And The Origin And End Of The Universe
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Author : Antonino Del Popolo
language : en
Publisher: World Scientific
Release Date : 2021-04-20
Invisible Universe The Dark Matter Dark Energy And The Origin And End Of The Universe written by Antonino Del Popolo and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-20 with Science categories.
This book describes some of the frontier problems of cosmology: our almost total ignorance of what the Universe is made up of, the mystery of its origin and its end. The book starts with a description of the historical events that led to the construction of the Big Bang model together with the stages that transformed the Universe from a very hot place to a very cold one, full with the structures that we observe today. These structures (stars, galaxies, etc.) constitute only 5% of the contents of the Universe. Concerning the remaining 95%, dubbed dark matter and dark energy, we know very little, and we have only indirect evidence of their existence. The text describes the story and the protagonists who showed the need for the existence of this 'missing matter', the observations, and puzzles they had to solve to understand that dark matter was not ordinary matter. The book describes the hunt for dark matter, carried out with instruments operating in space, on the Earth's surface, and in laboratories built in the bowels of the Earth. It also describes dark energy, which manifests itself in the accelerated expansion of the Universe, and appeared only a few billions of years ago. The book discusses why dark energy must exist and what its existence implies, especially for the future and the end of our Universe.
The Grand Unification Of Dark Matters
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Author : Dan Sharpe
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2017-01-01
The Grand Unification Of Dark Matters written by Dan Sharpe and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-01 with categories.
A unifying theory that covers dark matter, dark energy, gravity, space and negative energy by means of observation, citation, and deduction, revealing a fundamental definition for both space and gravity, support of dark energy theory, explanation of dark matter, revealing additional structure and properties of baryonic atoms, and revising estimates of the longevity of the universe. Other matters discussed are aerospace, anti-gravity, artificial gravity, gravitational waves, wormholes, cold fusion, cold fission, health and wellbeing, and the earth's atmosphere and global warming. The Grand Unification of Dark Matters theory is almost a certainty at this point, but will require validation and spark significant research and advancements in the areas of physics, space, cosmology, energy, health and various applied sciences. Expand your knowledge and perception of the universe, with this exciting new theory based on 3,700 years of written history, and who knows how long mankind has recognized this raw energy of the universe as being essential to your life, health and wellbeing.
Accelerated Cosmic Expansion
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Author : Claudia Moreno González
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-11-29
Accelerated Cosmic Expansion written by Claudia Moreno González and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-29 with Science categories.
Proceedings from the 2012 Fourth International Meeting on Gravitation and Cosmology, focusing on accelerated cosmic expansion This volume provides both an update and a review of the state of alternative theories of gravity in connection with the accelerated expansion of the universe issue. Different theoretical proposals exist to explain the acceleration in the cosmic expansion, generating the dark energy issue and opening the possibility to theories of gravity alternative to general relativity. Related issues such as the dark matter problem are also surveyed in order to give the readers profound insight on the subject from different points of view. Comprised of short talks and plenary lectures given by leading experts in the field, some of them with brilliant and historic contributions, the book allows the reader to find readable and referenced surveys in topics like f(R) theories, the dark matter and dark energy issues, Modified Newtonian Dynamics (MOND) scenarios, f(T) theories, scalar-tensor theories derived from non-Riemannian geometries, emergent universes, the cosmological constant and other topics of current interest for younger and senior physicists and graduate students. These proceedings are from the Fourth International Meeting on Gravitation and Cosmology, held in Guadalajara, Jalisco, México, from 20 - 25 May, 2012, was sponsored by ICTP- Trieste, Italy and COECyTJAL-Universidad de Guadalajara, México. This event is a series of scientific meetings started in 2004 in Cuba, focusing on current and selected topics in the fields of gravitation and cosmology.
Cosmological Inflation Dark Matter And Dark Energy
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Author : Kazuharu Bamba
language : en
Publisher: MDPI
Release Date : 2019-11-14
Cosmological Inflation Dark Matter And Dark Energy written by Kazuharu Bamba and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-11-14 with Science categories.
Various cosmological observations support not only cosmological inflation in the early universe, which is also known as exponential cosmic expansion, but also that the expansion of the late-time universe is accelerating. To explain this phenomenon, the existence of dark energy is proposed. In addition, according to the rotation curve of galaxies, the existence of dark matter, which does not shine, is also suggested. If primordial gravitational waves are detected in the future, the mechanism for realizing inflation can be revealed. Moreover, there exist two main candidates for dark matter. The first is a new particle, the existence of which is predicted in particle physics. The second is an astrophysical object which is not found by electromagnetic waves. Furthermore, there are two representative approaches to account for the accelerated expansion of the current universe. One is to assume the unknown dark energy in general relativity. The other is to extend the gravity theory to large scales. Investigation of the origins of inflation, dark matter, and dark energy is one of the most fundamental problems in modern physics and cosmology. The purpose of this book is to explore the physics and cosmology of inflation, dark matter, and dark energy.