Signatures of New Physics from the Primordial Universe
| Author | : Amjad Ashoorioon |
| Publisher | : |
| Total Pages | : |
| Release | : 2007 |
| Genre | : |
| ISBN | : |
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New Worlds, New Horizons in Astronomy and Astrophysics
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 324 |
| Release | : 2011-02-04 |
| Genre | : Science |
| ISBN | : 0309157994 |
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Driven by discoveries, and enabled by leaps in technology and imagination, our understanding of the universe has changed dramatically during the course of the last few decades. The fields of astronomy and astrophysics are making new connections to physics, chemistry, biology, and computer science. Based on a broad and comprehensive survey of scientific opportunities, infrastructure, and organization in a national and international context, New Worlds, New Horizons in Astronomy and Astrophysics outlines a plan for ground- and space- based astronomy and astrophysics for the decade of the 2010's. Realizing these scientific opportunities is contingent upon maintaining and strengthening the foundations of the research enterprise including technological development, theory, computation and data handling, laboratory experiments, and human resources. New Worlds, New Horizons in Astronomy and Astrophysics proposes enhancing innovative but moderate-cost programs in space and on the ground that will enable the community to respond rapidly and flexibly to new scientific discoveries. The book recommends beginning construction on survey telescopes in space and on the ground to investigate the nature of dark energy, as well as the next generation of large ground-based giant optical telescopes and a new class of space-based gravitational observatory to observe the merging of distant black holes and precisely test theories of gravity. New Worlds, New Horizons in Astronomy and Astrophysics recommends a balanced and executable program that will support research surrounding the most profound questions about the cosmos. The discoveries ahead will facilitate the search for habitable planets, shed light on dark energy and dark matter, and aid our understanding of the history of the universe and how the earliest stars and galaxies formed. The book is a useful resource for agencies supporting the field of astronomy and astrophysics, the Congressional committees with jurisdiction over those agencies, the scientific community, and the public.
Signatures of the Primordial Universe in Large-scale Structure Surveys
| Author | : Nicolas Van De Rijt |
| Publisher | : |
| Total Pages | : 170 |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
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Beyond the Standard Model Cocktail
| Author | : Yann Gouttenoire |
| Publisher | : Springer Nature |
| Total Pages | : 534 |
| Release | : 2023-01-01 |
| Genre | : Science |
| ISBN | : 3031118626 |
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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.
The Early Universe
| Author | : W.G. Unruh |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 429 |
| Release | : 2012-12-06 |
| Genre | : Science |
| ISBN | : 9400940157 |
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List of Participants ••. ••. •. . . . •. . ••. . . ••. ••. •. •. . . ••. •. •. . . ••. • xi I. MOSS / The Quantum Origin of the Universe ••••. •. •. •••. •••. ••• M. S. TUru~ER / Cosmology and Particle Physics •. . •••. ••. •. . •••. •• 19 G. GELMINI / Supersynunetry and the Early Universe •••. •. ••. . •. •. . 115 J. D. BARROW / Relativistic Cosmology. . . . . . . . . . . . . . . . . . . . . . . . . . . 125 P. J. E. PEEBLES / Yet Another Scenario for Galaxy Formation . ••. 203 ?:1. B. '-lISE / Non-Gaussian Fluctuations. . . . . . . . . . . . . . . . . . . . . . . . . . 215 S. D. H. mUTE / N-body Hethods and the Formation of Large-Scale Structure • . •. . . . • . • • . • • • . . . • . . . . • • . . . • . • . . 239 • . . . • • . . . . • T. PI~~ / Numerical Relativity and Cosmology. . . . . . . . . . . . . . . . . . . 261 J. R. BOND / Distortions and Anisotropies of the Cosmic Background Radiation •. •. . . ••. ••. •••. ••••. . ••. . •••••. •• 283 J. V. HALL / The Early Universe - An Observer's View. . . . . . . . . . . . 335 G. GELHINI / Can the Solar Neutrino Problem be the First Detected Signature of Dark Hatter from the Halo of Our Galaxy? 351 A. K. DRUKIER / Detecting Cold Dark !1atter Candidates •. •. •. . . •. . 361 S. TOULMIN / The Early Universe: Historical and Philosophical Perspectives . •. •. . . . . . . •. . . . •••. •. •. •. •. . . . ••••. . •. •. • 393 INDEX . . •. . . •. . . ••. . . ••••. . . •••••. . . •. •. •. . •. . . . •. . •. •. . . ••. •••.
Primordial Nucleosynthesis and Evolution of the Early Universe
| Author | : K. Sato |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 658 |
| Release | : 1991 |
| Genre | : Science |
| ISBN | : |
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1. Standard Model of Primordial Nucleosynthesis and Observations of Light Elements.- Standard Model of Primordial Nucleosynthesis: A Few General Remarks.- The Abundances of D, He and Li Test and Constrain the Standard Model of Cosmology.- Lithium, Beryllium and Boron: Observational Constraints on Primordial Nucleosynthesis.- The Evolution of the Galactic Lithium Abundance.- Chemical Evolution of Galaxies.- The Effect of Some Nonequilibrium Processes on the Primordial Nucleosynthesis.- Analysis of the Reaction 7Li(d, n)8Be at Subcoulomb Energies.- Experimental Study of the Key Reaction to the Nucleosynthesis in the Inhomogeneous Big Bang Models.- Primordial Black Holes and Big Bang Nucleosynthesis.- Constraints from Primordial Nucleosynthesis on Neutrino Degeneracy.- 2. QCD Phase Transition and Nucleosynthesis in Inhomogeneous Universes.- Strange Quark Matter in Physics and Astrophysics.- Primordial Nucleosynthesis in Inhomogeneous Universe.- Sterile Neutrinos in the Early Universe.- Could Cosmic QCD Phase Transition Produce Strange Quark Matter Which Survives until the Present Time?.- Multi-Zone Calculation of Nucleosynthesis in Inhomogeneous Universe and Be-9 Abundance.- Signatures of Inhomogeneity in the Early Universe.- Diffusion Coefficients of Nucleons in the Inhomogeneous Big Bang Model.- Reactions on Carbon-14.- Survival of Strange Matter Lumps Formed in the Early Universe.- Measurement of the Cross Section of the 12C(n, g)13C Reaction at Stellar Energy.- Inhomogeneous Universes in the Framework of Lattice QCD.- 3. Inflation and very Early Universe.- The Beginning of the Universe.- Extended Inflationary Cosmology: A Primer.- The Inflation Sector of Extended Inflation.- Inflation in Generalized Einstein Theories.- Baryogenesis in the Universe.- Formation of Topological Defects in the Inflationary Universe.- Non-Zel'dovich Fluctuations from Inflation.- Magnetic Theory of Gravitation.- Chaotic Inflation and the Omega Problem.- Late-Time Cosmological Phase Transitions.- False-Vacuum Decay in Generalized Extended Inflation.- Reconciling a Small Density Parameter to Inflation.- Soft Inflation: A Model for Easing Constraints.- Stochastic Inflation Lattice Simulations: Ultra-Large Scale Structure of the Universe.- Purely Quantum Derivation of Density Fluctuations in the Inflationary Universe.- Constraints on the Coupling of Weakly-Interacting Particles to Matter from Stellar Evolution.- Formation and Evolution of Domain-Wall-Networks.- Catastrophe of Spacetime in the Early Universe.- (2+1)-Dimensional Quantum Gravity.- A Stringy Universe Scenario.- The Constant-Mean-Curvature Slicing of the Schwarzschild-de Sitter Space-Time.- Schwarzschild-de Sitter Type Wormhole and Cosmological Constant.- 4. Background Radiation.- COBE: New Sky Maps of the Early Universe.- Large Scale Cosmic Instability.- Gas-Induced Primary and Secondary CMB Anisotropies.- Cosmic X-Ray Background.- Large Scale Anisotropy of the CMB in an Open Universe and Constraints on the Models of Galaxy Formation.- 5. Dark Matter.- The Best-Fit Universe.- LEP Physics and the Early Universe.- A Search for Dark Matters in the Kamiokande II.- Baryonic Dark Matter.- Phenomenological Dark Matter Detection Rate-form WIMP to SIMP-.- 6. Galaxies and AGN.- X-Ray Iron Line of Cluster of Galaxies.- Dynamical Evolution of Compact Groups of Galaxies.- Correlations of Spin Angular Momenta of Galaxies.- Formation of Bipolar Radio Jets and Lobes from Accreton Disk around Forming Blackhole at the Center of Protogalaxies.- An Evolutionary Unified Scheme for Radio-Loud Quasars and Blazars.- Magnetohydrodynamical Energy Extraction from a Kerr Black Hole.- Spherical Symmetric Model for Calculating Large Peculiar Velocities of Galaxies.- On the Origin of Cosmological Magnetic Fields.- 7. Large Scale Structure.- The Hawaii Deep Survey-Implications for Cosmology and Galaxy Formation.- Analysis of the Large Scale Structure with Deep Pencil Beam Surveys.- Distance to the Coma Cluster and the Va.
Primordial Nucleosynthesis and Evolution of the Early Universe
| Author | : K. Sato |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 668 |
| Release | : 1991 |
| Genre | : Science |
| ISBN | : 9780792311935 |
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1. Standard Model of Primordial Nucleosynthesis and Observations of Light Elements.- Standard Model of Primordial Nucleosynthesis: A Few General Remarks.- The Abundances of D, He and Li Test and Constrain the Standard Model of Cosmology.- Lithium, Beryllium and Boron: Observational Constraints on Primordial Nucleosynthesis.- The Evolution of the Galactic Lithium Abundance.- Chemical Evolution of Galaxies.- The Effect of Some Nonequilibrium Processes on the Primordial Nucleosynthesis.- Analysis of the Reaction 7Li(d, n)8Be at Subcoulomb Energies.- Experimental Study of the Key Reaction to the Nucleosynthesis in the Inhomogeneous Big Bang Models.- Primordial Black Holes and Big Bang Nucleosynthesis.- Constraints from Primordial Nucleosynthesis on Neutrino Degeneracy.- 2. QCD Phase Transition and Nucleosynthesis in Inhomogeneous Universes.- Strange Quark Matter in Physics and Astrophysics.- Primordial Nucleosynthesis in Inhomogeneous Universe.- Sterile Neutrinos in the Early Universe.- Could Cosmic QCD Phase Transition Produce Strange Quark Matter Which Survives until the Present Time?.- Multi-Zone Calculation of Nucleosynthesis in Inhomogeneous Universe and Be-9 Abundance.- Signatures of Inhomogeneity in the Early Universe.- Diffusion Coefficients of Nucleons in the Inhomogeneous Big Bang Model.- Reactions on Carbon-14.- Survival of Strange Matter Lumps Formed in the Early Universe.- Measurement of the Cross Section of the 12C(n, g)13C Reaction at Stellar Energy.- Inhomogeneous Universes in the Framework of Lattice QCD.- 3. Inflation and very Early Universe.- The Beginning of the Universe.- Extended Inflationary Cosmology: A Primer.- The Inflation Sector of Extended Inflation.- Inflation in Generalized Einstein Theories.- Baryogenesis in the Universe.- Formation of Topological Defects in the Inflationary Universe.- Non-Zel'dovich Fluctuations from Inflation.- Magnetic Theory of Gravitation.- Chaotic Inflation and the Omega Problem.- Late-Time Cosmological Phase Transitions.- False-Vacuum Decay in Generalized Extended Inflation.- Reconciling a Small Density Parameter to Inflation.- Soft Inflation: A Model for Easing Constraints.- Stochastic Inflation Lattice Simulations: Ultra-Large Scale Structure of the Universe.- Purely Quantum Derivation of Density Fluctuations in the Inflationary Universe.- Constraints on the Coupling of Weakly-Interacting Particles to Matter from Stellar Evolution.- Formation and Evolution of Domain-Wall-Networks.- Catastrophe of Spacetime in the Early Universe.- (2+1)-Dimensional Quantum Gravity.- A Stringy Universe Scenario.- The Constant-Mean-Curvature Slicing of the Schwarzschild-de Sitter Space-Time.- Schwarzschild-de Sitter Type Wormhole and Cosmological Constant.- 4. Background Radiation.- COBE: New Sky Maps of the Early Universe.- Large Scale Cosmic Instability.- Gas-Induced Primary and Secondary CMB Anisotropies.- Cosmic X-Ray Background.- Large Scale Anisotropy of the CMB in an Open Universe and Constraints on the Models of Galaxy Formation.- 5. Dark Matter.- The Best-Fit Universe.- LEP Physics and the Early Universe.- A Search for Dark Matters in the Kamiokande II.- Baryonic Dark Matter.- Phenomenological Dark Matter Detection Rate-form WIMP to SIMP-.- 6. Galaxies and AGN.- X-Ray Iron Line of Cluster of Galaxies.- Dynamical Evolution of Compact Groups of Galaxies.- Correlations of Spin Angular Momenta of Galaxies.- Formation of Bipolar Radio Jets and Lobes from Accreton Disk around Forming Blackhole at the Center of Protogalaxies.- An Evolutionary Unified Scheme for Radio-Loud Quasars and Blazars.- Magnetohydrodynamical Energy Extraction from a Kerr Black Hole.- Spherical Symmetric Model for Calculating Large Peculiar Velocities of Galaxies.- On the Origin of Cosmological Magnetic Fields.- 7. Large Scale Structure.- The Hawaii Deep Survey-Implications for Cosmology and Galaxy Formation.- Analysis of the Large Scale Structure with Deep Pencil Beam Surveys.- Distance to the Coma Cluster and the Va.
Connecting Quarks with the Cosmos
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 222 |
| Release | : 2003-03-12 |
| Genre | : Science |
| ISBN | : 030917113X |
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Advances made by physicists in understanding matter, space, and time and by astronomers in understanding the universe as a whole have closely intertwined the question being asked about the universe at its two extremesâ€"the very large and the very small. This report identifies 11 key questions that have a good chance to be answered in the next decade. It urges that a new research strategy be created that brings to bear the techniques of both astronomy and sub-atomic physics in a cross-disciplinary way to address these questions. The report presents seven recommendations to facilitate the necessary research and development coordination. These recommendations identify key priorities for future scientific projects critical for realizing these scientific opportunities.
The Music of the Big Bang
| Author | : Amedeo Balbi |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 167 |
| Release | : 2008-10-16 |
| Genre | : Science |
| ISBN | : 3540787283 |
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Ever since its infancy, humankind has been seeking answers to some very basic and profound questions. Did the Universe begin? If it did, how old is it, and where did it come from? What is its shape? What is it made of? Fascinating myths and brilliant in- itions attempting to solve such enigmas can be found all through the history of human thought. Every culture has its own legends, itsownworldcreationtales,itsphilosophicalspeculations,itsre- gious beliefs. Modern science, however, cannot content itself with fanciful explanations, no matter how suggestive they are. No- days, our theories about the Universe, built upon rational ded- tion, have to survive the hard test of experiment and observation. Cosmology, the science which studies the origin and evo- tion of the Universe, had to overcome enormous dif?culties before it could achieve the same level of dignity as other physical dis- plines. At ?rst, it had no serious physical model and mathematical tools that could be used to address the complexity of the problems it had to face. Then, it suffered from a chronic lack of experim- tal data, which made it almost impossible to test the theoretical speculations. Given this situation, answering rigorously the many questions on the nature of the Universe seemed nothing more than a delusion. Today, however, things have changed. We live in the golden age of cosmology: an exciting moment, when, for the ?rst time, we are able to scienti?cally understand our Universe.
Statistics of the CMB Polarised Anisotropies
| Author | : Agnès Ferté |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
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A deep understanding of the first instants of the Universe would not only complete our description of the cosmic history but also enable an exploration of new fundamental phsyics at energy scales unexplored on Earth laboratories and colliders. The most favoured scenario which describes these first instants is the cosmic inflation, an ephemeral period of accelerated expansion shortly after the big bang. Some hints are in favour of this scenario which is however still waiting for a smoking-gun observational signature. The cosmic microwave background (CMB) B modes would be generated at large angular scales by primordial gravitational waves produced during the cosmic inflation. In this frame, the primordial CMB B modes are the aim of various ongoing or being-deployed experiments, as well as being-planned satellite mission. However, unavoidable instrumental and astrophysical features makes its detection difficult. More specifically, a partial sky coverage of the CMB polarisation (inherent to any CMB measurements) leads to the E-to-B leakage, a major issue on the estimation of the CMB B modes power spectrum. This effect can prevent from a detection of the primordial B modes even if the polarisation maps are perfectly cleaned, since the (much more intense) leaked E-modes mask the B-modes. Various methods have been proposed in the literature offering a B modes estimation theoretically free from any leakage. However, when applied to real data, they are no longer completely leakage-free and remove part of the information on B-modes. These methods consequently need to be validate in the frame of real data analysis. In this purpose, I have worked on the implementation and numerical developments of three typical pseudospectrum methods. Afterwards, I have tested each of them in the case of two fiducial experimental set ups, typical of current balloon-borne or ground based experiments and of potential satellite mission. I have therefore stated on the efficiency and necessity of one of them: the so-called pure method. I have also shown that the case of nearly full sky coverage is not trivial because of the intricate shape of the contours of the point-sources and galactic mask. As a result this method is also required for an optimal B modes pseudospectrum estimation in the context of a satellite mission. With this powerful method, I performed realistic forecasts on the constraints that a CMB polarisation detection could set on the physics of the primordial universe. First of all, I have studied the detectability of the tensor-to-scalar ratio r, amounting the amplitude of primordial gravity waves and directly related to the energy scale of inflation, in the case of current suborbital experiments, a potential array of telescopes and a potential satellite mission. I have shown that a satellite-like experiment dedicated to the CMB polarisation detection will enable us to measure a tensor-to-scalar ratio of about 0.001, thus allowing for distinguishing between large and small field models of inflation. Moreover, in extension of the standard model of cosmology, the CMB EB and TB correlations can be generated. In particular, I have forecast the constraints that one could set on a parity violation in the gravitational waves during the primordial universe from observations on a small and a large part of the sky. Our results have shown that a satellite-like experiment is mandatory to set constraints on a range of parity violation models. I finally address the problematic of the detectability of observational signature of a primordial magnetic field.
