Cosmological Probes Of Light Relics

Author : Benjamin Wallisch
Publisher : Springer Nature
Page : 229 pages
File Size : 52,8 Mb
Release : 2019-11-20
Category : Science
ISBN : 9783030310981

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Cosmological Probes of Light Relics by Benjamin Wallisch Pdf

The wealth of recent cosmic microwave background and large-scale structure data has transformed the field of cosmology. These observations have not only become precise enough to answer questions about the universe on the largest scales, but also to address puzzles in the microscopic description of Nature. This thesis investigates new ways of probing the early universe, the properties of neutrinos and the possible existence of other light particles. In particular, based on detailed theoretical insights and novel analyses, new evidence for the cosmic neutrino background is found in the distribution of galaxies and in cosmic microwave background data. This tests the Standard Model of particle physics and the universe back to a time when it was about one second old. Furthermore, it is demonstrated that future observations will be capable of probing physics beyond the Standard Model since they can achieve a particular target which would either allow the detection of any light particles that have ever been in thermal equilibrium or imply strong bounds on their properties.

Author : Julien Lesgourgues,Gianpiero Mangano,Gennaro Miele,Sergio Pastor
Publisher : Cambridge University Press
Page : 391 pages
File Size : 41,9 Mb
Release : 2013-02-21
Category : Science
ISBN : 9781107013957

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Neutrino Cosmology by Julien Lesgourgues,Gianpiero Mangano,Gennaro Miele,Sergio Pastor Pdf

A self-contained guide to the role played by neutrinos in the Universe and how their properties influence cosmological and astrophysical observations.

Author : International Astronomical Union. Symposium
Publisher : Cambridge University Press
Page : 528 pages
File Size : 41,5 Mb
Release : 2010-05-13
Category : Science
ISBN : 0521765064

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Light Elements in the Universe (IAU S268) by International Astronomical Union. Symposium Pdf

IAU Symposium 268 presents an overview of the most recent observational and theoretical research on the formation and evolution of light elements in the Universe: H, He, Li, Be, B, and their isotopes. Astrophysicists from a variety of subfields discuss recent developments that will improve our understanding of the light elements and provide important clues to stellar and galactic evolution, Big Bang nucleosynthesis, and cosmology. Striking observational progress has been achieved recently through the advent of next generation ground- and space-based telescopes, such as the cosmic microwave background experiments that allow the accurate determination of the baryon density of the Universe. New theoretical breakthroughs in describing stellar interiors and the chemical evolution of complex systems and the remaining challenges in this field are also addressed. This critical review is a useful resource for all those interested in the chemical evolution of the Universe.

Author : Alberto Salvio,Francesco Sannino
Publisher : Frontiers Media SA
Page : 265 pages
File Size : 50,6 Mb
Release : 2019-12-06
Category : Electronic
ISBN : 9782889632053

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From the Fermi Scale to Cosmology by Alberto Salvio,Francesco Sannino Pdf

Author : Yann Gouttenoire
Publisher : Springer Nature
Page : 534 pages
File Size : 53,9 Mb
Release : 2023-01-01
Category : Science
ISBN : 9783031118623

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Beyond the Standard Model Cocktail by Yann Gouttenoire Pdf

This book provides a remarkable and complete survey of important questions at the interface between theoretical particle physics and cosmology. After discussing the theoretical and experimental physics revolution that led to the rise of the Standard Model in the past century, the author reviews all the major open puzzles, among them the hierarchy problem, the small value of the cosmological constant, the matter-antimatter asymmetry, and the dark matter enigma, including the state-of-the-art regarding proposed solutions. Also addressed are the rapidly expanding fields of thermal dark matter, cosmological first-order phase transitions and gravitational-wave signatures. In addition, the book presents the original and interdisciplinary PhD research work of the author relating to Weakly-Interacting-Massive-Particles around the TeV scale, which are among the most studied dark matter candidates. Motivated by the absence of experimental evidence for such particles, this thesis explores the possibility that dark matter is much heavier than what is conventionally assumed.

Author : James Geach
Publisher : Reaktion Books
Page : 192 pages
File Size : 51,8 Mb
Release : 2020-09-03
Category : Science
ISBN : 9781789140217

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Five Photons by James Geach Pdf

Have you ever wondered what is the most distant source of light we can see, or how a star shines? Did you know that black holes can blaze like cosmic beacons across intergalactic space, and that ancient radio waves might herald the ignition of the very first stars? Have you ever thought about what light really is? Five Photons explains what we know about the universe through five different journeys of light across space and time. They are tales of quantum physics and general relativity, stars and black holes, dark matter and dark energy. Let yourself be swept away on a journey of discovery towards a deeper understanding of the cosmos.

Author : International Astronomical Union. Symposium
Publisher : Cambridge University Press
Page : 518 pages
File Size : 53,6 Mb
Release : 2010
Category : Cosmic abundances
ISBN : 0521764955

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Chemical Abundances in the Universe by International Astronomical Union. Symposium Pdf

Session I : Primordial nucleosynthesis and the first stars in the Universe -- Session II : First stars in the Galaxy -- Session III : Chemical abundances in the high red-shift Universe -- Session IV : Chemical abundance constraints on mass assembly and star formation in local galaxies and the Milky Way -- Session V : Extrasolar planets: the chemical abundance connection -- Session VI : Abundance surveys and projects in the era of future large telescopes.

Author : F. Melchiorri,Y. Rephaeli
Publisher : IOS Press
Page : 525 pages
File Size : 42,9 Mb
Release : 2006-01-24
Category : Science
ISBN : 9781614990154

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Background Microwave Radiation and Intracluster Cosmology by F. Melchiorri,Y. Rephaeli Pdf

This study is devoted to the Sunyaev-Zeldovich (S-Z) effect, and important related topics in cluster and CMB research. S-Z science is about to be significantly enhanced by unique, multi-faceted cluster and cosmological yield, at a level of precision in accord with the high standards of the current era that was heralded by spectacular achievements in cosmological CMB research. The pedagogical reviews and technical seminars included in this volume represent most of the important current topics in S-Z work and in the astrophysics of clusters. The publication touches upon all relevant aspects of the S-Z effect and its use as a precise cluster and cosmological probe. To commemorate the 40th anniversary of the detection of the CMB by Penzias and Wilson (in 1964), there is a chapter devoted to the history of this discovery. In his fascinating account of their work, he outlines also some lessons pertinent to current scientific issues. Other chapters discuss very interesting related observational work in Europe and the US.

Author : Maurice Mandel Shapiro,Todor Stanev,J. P. Wefel
Publisher : World Scientific
Page : 373 pages
File Size : 48,8 Mb
Release : 2004
Category : Science
ISBN : 9789812387271

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Relativistic Astrophysics and Cosmology by Maurice Mandel Shapiro,Todor Stanev,J. P. Wefel Pdf

This book constitutes the proceedings of the 13th Course of the International School of Cosmic Ray Astrophysics. It focuses on major areas of astrophysics, their relation to cosmic ray physics, and our current understanding of the energetic processes in the Galaxy and the Universe that govern the acceleration and form the features of the cosmic rays that we detect at Earth.The proceedings have been selected for coverage in: ? Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)? CC Proceedings ? Engineering & Physical Sciences

Author : D. Bailin,A. Love
Publisher : CRC Press
Page : 228 pages
File Size : 47,6 Mb
Release : 2021-09-29
Category : Science
ISBN : 9781000546088

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Cosmology in Gauge Field Theory and String Theory by D. Bailin,A. Love Pdf

Cosmology in Gauge Field Theory and String Theory focuses on the cosmological implications of the gauge theories of particle physics and of string theory. The book first examines the universe's series of phase transitions in which the successive gauge symmetries of the higher-temperature phase were spontaneously broken after the big bang, discussing relics of these phase transitions, more generic relics (baryons, neutrinos, axions), and supersymmetric particles (neutralinos and gravitinos). The author next studies supersymmetric theory, supergravity theory, and the constraints on the underlying field theory of the universe's inflationary era. The book concludes with a discussion of black hole solutions of the supergravity theory that approximates string theory at low energies and the insight that string theory affords into the microscopic origin of the Bekenstein-Hawking entropy. Cosmology in Gauge Field Theory and String Theory provides a modern introduction to these important problems from a particle physicist's perspective. It is intended as an introductory textbook for a first course on the subject at a graduate level.

Author : Viatcheslav Mukhanov
Publisher : Cambridge University Press
Page : 454 pages
File Size : 53,6 Mb
Release : 2005-11-10
Category : Science
ISBN : 9781139447119

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Physical Foundations of Cosmology by Viatcheslav Mukhanov Pdf

Inflationary cosmology has been developed over the last twenty years to remedy serious shortcomings in the standard hot big bang model of the universe. This textbook, first published in 2005, explains the basis of modern cosmology and shows where the theoretical results come from. The book is divided into two parts; the first deals with the homogeneous and isotropic model of the Universe, the second part discusses how inhomogeneities can explain its structure. Established material such as the inflation and quantum cosmological perturbation are presented in great detail, however the reader is brought to the frontiers of current cosmological research by the discussion of more speculative ideas. An ideal textbook for both advanced students of physics and astrophysics, all of the necessary background material is included in every chapter and no prior knowledge of general relativity and quantum field theory is assumed.

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 34 pages
File Size : 40,8 Mb
Release : 2018-10-15
Category : Science
ISBN : 1728746760

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Thermal Relics: Do We Know Their Abundances by National Aeronautics and Space Adm Nasa Pdf

The relic abundance of a particle species that was once in thermal equilibrium in the expanding Universe depends upon a competition between the annihilation rate of the species and the expansion rate of the Universe. Assuming that the Universe is radiation dominated at early times the relic abundance is easy to compute and well known. At times earlier than about 1 sec after the bang there is little or no evidence that the Universe had to be radiation dominated, although that is the simplest and standard assumption. Because early-Universe relics are of such importance both to particle physics and to cosmology, three nonstandard possibilities are considered in detail for the Universe at the time a species' abundance froze in: energy density dominated by shear (i.e., anisotropic expansion), energy density dominated by some other nonrelativistic species, and energy density dominated by the kinetic energy of the scalar field that sets the gravitational constant in a Brans-Dicke-Jordan cosmological mode. In the second case the relic abundance is less than the standard value, while in the other two cases it can be enhanced by a significant factor. Two other more exotic possibilities for enhancing the relic abundance of a species are also mentioned--a larger value of Newton's constant at early times (e.g., as might occur in superstring or Kaluza-Klein theories) or a component of the energy density at early times with a very stiff equation of state (p greater than rho/3), e.g., a scalar field phi with potential V(phi) = Beta /phi/ (exp n) with n greater than 4. Results have implications for dark matter searches and searches for particle relics in general. Kamionkowski, Marc and Turner, Michael S. Unspecified Center NAGW-1340

Author : Diego Aristizabal Sierra,Frank Franz Deppisch,Alexander Merle
Publisher : Frontiers Media SA
Page : 293 pages
File Size : 41,9 Mb
Release : 2020-01-13
Category : Electronic
ISBN : 9782889633517

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The Physics Associated with Neutrino Masses by Diego Aristizabal Sierra,Frank Franz Deppisch,Alexander Merle Pdf

This eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contact.

Author : Gianfranco Bertone
Publisher : Cambridge University Press
Page : 763 pages
File Size : 52,7 Mb
Release : 2010-01-07
Category : Science
ISBN : 9780521763684

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Particle Dark Matter by Gianfranco Bertone Pdf

Describes the dark matter problem in particle physics, astrophysics and cosmology for graduate students and researchers.

Author : C. Esteban,R. J. García López,A. Herrero,F. Sánchez
Publisher : Cambridge University Press
Page : 334 pages
File Size : 50,8 Mb
Release : 2004-03-18
Category : Science
ISBN : 1139450077

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Cosmochemistry by C. Esteban,R. J. García López,A. Herrero,F. Sánchez Pdf

The chemical composition of the Universe has evolved over billions of years. A host of astrophysical processes and observations must be understood in order to explain why celestial objects have the chemical compositions observed. Originally published in 2004, this book contains the lectures delivered at the XIII Canary Islands Winter School of Astrophysics, which was dedicated to reviewing current knowledge about the origin and evolution of the chemical elements in the Universe. Written by seven prestigious astrophysics researchers, it covers cosmological and stellar nucleosynthesis, abundance determinations in stars and ionised nebulae, chemical composition of nearby and distant galaxies, and models of chemical evolution of galaxies and intracluster medium. This is a timely review of developments in cosmochemistry over the last decade.