Ononic Cosmogenesis Volume 2

The New Alexandria Library of Texas

This very fascinating obscure paper we investigate the nature of dark energy within the framework of cosmology, focusing on different theoretical models and their equivalence in explaining the accelerated expansion of the universe. We explore the ΛCDM model, the standard model of cosmology, as well as alternative models such as scalar field theories, including quintessence, phantom energy, and tachyon fields, alongside modified gravity theories like F(R) and f(T) gravity. The paper provides a detailed comparison of these models through cosmographic tests, using observational data from Type Ia supernovae, Baryon Acoustic Oscillations, and Cosmic Microwave Background radiation to constrain their validity. In addition, we delve into the concept of future singularities, including type I, II, III, and IV singularities, as they relate to the fate of the universe. We also examine the role of holographic dark energy and the generalized Chaplygin gas model as potential candidates for describing the universe's dark energy content. Through the analysis of these models, we aim to provide a comprehensive understanding of the dynamics of dark energy and its implications for the evolution and ultimate fate of the cosmos. By bridging theoretical frameworks with observational constraints, this study contributes to advancing our knowledge of the mysterious force driving the universe's accelerated expansion. Here is a brief summary for each chapter in the paper "Dark Energy Cosmology: The Equivalent Description via Different Theoretical Models and Cosmography Tests": I. Introduction (6) This section introduces the fundamental problem of dark energy in cosmology, the accelerated expansion of the universe, and provides an overview of various theoretical models and cosmographic tests. It sets the stage for exploring how different models attempt to explain dark energy and its implications for the universe's evolution. II. The Λ Cold Dark Matter (ΛCDM) Model (10) This chapter outlines the standard ΛCDM model, which includes the cosmological constant (Λ) as a form of dark energy. It discusses observational tests that validate the model, such as Type Ia Supernovae (SNe Ia), Baryon Acoustic Oscillations (BAO), and Cosmic Microwave Background (CMB) radiation, which support the ΛCDM framework. III. Cosmology of Dark Fluid Universe (17) This chapter explores alternative models of dark energy, including the concept of a "dark fluid" that combines dark energy and dark matter into a unified framework. It covers equations of state (EoS), finite-time future singularities, and the behavior of various models, such as the Generalized Chaplygin Gas (GCG) and coupled dark energy with dark matter, as well as phantom scenarios, including the Little Rip and Pseudo-Rip cosmologies. IV. Scalar Field Theory as Dark Energy of the Universe (46) Scalar field theories are examined as possible explanations for dark energy. This chapter discusses the equivalence between fluid descriptions and scalar field theories, presenting various cosmological models such as the ΛCDM, Quintessence, Phantom, and unified inflationary models. It also explores scalar fields crossing the phantom divide and their implications for cosmic acceleration. V. Tachyon Scalar Field Theory (56) This section focuses on tachyon scalar fields as an alternative form of dark energy. It explores how tachyon fields can be incorporated into cosmological models to explain the accelerated expansion of the universe and examines their relationship to other scalar field models. VI. Multiple Scalar Field Theories (59) This chapter delves into models with multiple scalar fields, both standard and new types of multi-scalar field theories. It provides an overview of two-scalar field theories and explores the complexities introduced by models with n (≥ 2) scalar fields, which could offer more flexible explanations for dark energy. VII. Holographic Dark Energy (70) The concept of holographic dark energy is introduced in this chapter, which links dark energy to the holographic principle. It includes models of holographic dark energy, generalized forms, and the role of the Hubble entropy in cosmological evolution. VIII. Accelerating Cosmology in F(R) Gravity (78) This section examines F(R) gravity, a modified theory of gravity that includes a general function of the Ricci scalar R. It discusses the reconstruction methods of F(R) gravity, its relation to scalar field theories, and different cosmological scenarios such as the ΛCDM, quintessence, and phantom models. IX. f(T) Gravity (94) This chapter focuses on f(T) gravity, an extension of general relativity based on torsion instead of curvature. It discusses the basic formalism, the reconstruction of f(T) models, and the implications of finite-time future singularities within this framework. It also explores thermodynamic aspects of f(T) gravity. X. Testing Dark Energy and Alternative Gravity by Cosmography: Generalities (104) This chapter presents cosmographic tests as a method for testing dark energy models and alternative gravity theories. It introduces general principles and techniques used to constrain cosmological models through observational data and the expansion history of the universe. XI. An Example: Testing F(R) Gravity by Cosmography (112) A practical example of using cosmographic tests to evaluate F(R) gravity models is provided here. The chapter discusses how different F(R) models, including the CPL model, the ΛCDM case, and constant EoS models, are tested using observational data. XII. Theoretical Constraints on the Model Parameters (125) This chapter provides a detailed analysis of the theoretical constraints on model parameters, including the double power law Lagrangian and the Hu-Sawicki model. These constraints help refine the accuracy of dark energy models and assess their viability in explaining cosmic acceleration. XIII. Constraints Coming from Observational Data (130) This section focuses on the observational data used to test and constrain dark energy models. It reviews the latest measurements from supernovae, CMB, BAO, and other cosmological probes to establish the validity of various dark energy theories. XIV. Conclusion (137) The conclusion summarizes the main findings of the paper, highlighting the strengths and weaknesses of the different theoretical models of dark energy and the role of cosmographic tests in improving our understanding of the universe's accelerated expansion. It suggests potential directions for future research. Acknowledgments (139) This section acknowledges the contributions and support received from various researchers and funding bodies involved in the study. References (140) A comprehensive list of references is provided, detailing the sources and works cited throughout the paper. This summary gives a concise overview of the chapters and their key topics. Let me know if you'd like further details! Tags dark energy, cosmology, ΛCDM model, dark matter, accelerated expansion, cosmic acceleration, cosmographic tests, observational data, supernovae, Type Ia Supernovae, Baryon Acoustic Oscillations, Cosmic Microwave Background, scalar field theory, quintessence, phantom energy, coupled dark energy, Generalized Chaplygin Gas, GCG model, future singularities, finite-time singularities, inhomogeneous universe, dark fluid universe, dark energy equation of state, cosmological constant, universe evolution, cosmic fate, cosmological parameters, observational constraints, cosmological surveys, inflation, unified inflationary models, tachyon field, multiple scalar fields, F(R) gravity, f(T) gravity, modified gravity theories, torsion gravity, dark fluid, cosmological models, phantom phase, Little Rip, Pseudo-Rip cosmology, cosmic structure, future singularities, scalar field reconstruction, cosmology of dark energy, dark energy models, alternative gravity theories, scalar-tensor theories, cosmological reconstruction, holographic dark energy, holographic principle, dark energy reconstruction, modified theories of gravity, curvature, Ricci scalar, torsion, f(T) models, cosmic history, type I singularities, type II singularities, type III singularities, type IV singularities, cosmological observations, parameter fitting, dark energy density, universe expansion rate, cosmological probes, late-time acceleration, accelerated universe, cosmic history tests, energy conditions, model-independent tests, supernova constraints, large-scale structure, cosmic observations, dynamical dark energy, cosmological evolution, cosmic destiny, observational cosmology, dark matter interaction, dark energy theories, scalar-tensor theory equivalence, general relativity, gravitational theories, cosmological inflation, dark energy densities, gravitational lensing, cosmic surveys, dark energy equation of state (EoS), phantom divide, dark energy models, observational constraints, cosmology tests, equation of state, cosmological constant value, redshift surveys, dark energy components, cosmological dynamics, future cosmological probes, cosmic parameters, dark energy constraints, modified gravitational models, cosmic acceleration models, cosmic microwave background anisotropies, perturbation theory, universe parameter constraints, cosmological theory comparisons, structure formation, cosmological tests, exotic matter, cosmic thermodynamics, future cosmic fate, future singularity models, universe's fate, quantum field theories, dark energy interpretation, cosmological data, scalar fields, field theory models, cosmic theory predictions, dark energy density fluctuations, cosmic acceleration measurements, energy content of the universe, unified cosmological models, cosmological limits, gravitational wave signals, testing dark energy, dark energy inflation, quantum cosmology, cosmology of the future, gravity theories, quantum perturbations, large-scale structure measurements, cosmic structure formation, cosmic fluid equations, future testing of cosmology, ...

2004

In these notes I will review our present understanding of the origin and evolution of the universe, making emphasis on the most recent observations of the acceleration of the universe, the precise measurements of the microwave background anisotropies, and the formation of structure like galaxies and clusters of galaxies from tiny primodial fluctuations generated during inflation. 1

Zygon�, 1990

In what follows, I review the modern theory of the origin of the universe as astronomers and physicists are coming to understand it during the last decades of the twentieth century. An unexpected discovery of this study is that the story of "cosmogenesis" cannot be completely told unless we understand the fundamental nature of matter, space, and time. In the context of modem cosmology space has become not only the bedrock (so to speak) of our physical existence, it may yield a fuller understanding of the universe itself.

Salma Ali, 2024

This article delves into the profound complexities of the universe's origin and evolution, integrating contemporary cosmological theories with quantum mechanics. It begins by examining the concept of thermalization within the primordial universe, elucidating how particle interactions facilitated the transition to thermodynamic equilibrium. The discussion progresses through critical epochs, from the gravitational singularity to cosmic inflation, highlighting the intricate balance of forces that shaped the early universe. We explore the ramifications of baryogenesis, the formation of primordial elements, and the subsequent structure formation, drawing upon empirical evidence from Type Ia supernovae and cosmic microwave background radiation. The exploration culminates in an analysis of dark matter and dark energy, positing that these enigmatic constituents may reside across parallel realities as suggested by the Many-Worlds Interpretation of quantum mechanics. By proposing that decoherence could explain the expanding universe and the discrepancies observed in cosmological data—such as Hubble tension—this work offers a novel framework for understanding the universe's evolution. Through this synthesis of quantum and cosmological principles, the article endeavors to illuminate the elusive nature of reality and foster further inquiry into the fundamental mechanisms governing our cosmos.

Inflationary cosmology has been developed over the last 20 years to remedy serious shortcomings in the standard hot big bang model of the universe.Taking an original approach, this textbook explains the basis of modern cosmology and shows where the theoretical results come from.

Eprint Arxiv 1107 1799, 2011

Rising to Mach, the problem of establishing the unity of the physical essence of the Universe on all space-time scales of its evolution is, apparently, one of the main problems in contemporary epistemology. The issues are primarily related to the problems of the dynamics of the Universe, namely, the need to postulate hypothetical entities - dark energy and dark matter, whose nature is unknown, but whose contribution to the energy content of the Universe is about 95%. A "severe trial for the entire fundamental theory" turned out to be a discrepancy of 120 orders of magnitude between the experimentally established value of the cosmological constant and the calculated value of the energy density of the physical vacuum. Sharp questions arise also regarding the physical essence of gravitation and the nature of its unique smallness as compared with other interactions - nuclear ones, strong and weak, as well as electromagnetic ones. Sufficiently acute problems in the perception of the Universe as a single holistic system arise also at the level of microscales. First of all, we mean here the so called low-energy nuclear reactions, which are realized in the conditions of nonequilibrium low temperature plasma. The fundamental problems of such processes are usually not widely discussed, and many physicists are very critical of the very possibility of implementing such processes. Our main hypothesis for understanding the key problems of contemporary fundamental physics, including the indicated cosmological problems as well as a new class of electron-initiated nuclear chemical processes, is to introduce the basic reference system associated with the electromagnetic component of physical vacuum - EM vacuum of the expanding Universe, with a selection of global time t, being common for all points of the expanding Universe and measured starting from the time of t = 0, which corresponds to the Big Bang.

HAL (Le Centre pour la Communication Scientifique Directe), 2023

We wish to suggest an alternative physical origin and organisation of the universe contrasting with the Standard Model of Cosmology [ ]. The masses of Standard Model (SM) particles [ ] are 1 2 generated by interactions between a quantum field, and thermal and particle diffusion waves-the Thermon-PDW mechanism-a process which is observationally confirmed [ ]. An exact 3 "ensemble" of quantum fields responding to harmonic solutions of interacting thermal and particle diffusion waves [ , ] solves the problem of particle mass. However, this generates its own 4 5 complication: an obligatory requirement for a thermal source perfusing continuously throughout the universe. This constraint (and others) is accommodated by several properties of the principal hypothesis. Furthermore, if this interpretation is validated, it eliminates many difficulties due to the orthodox cosmological model, such as reverse engineering fundamental laws of physics, the initial singularity, initial high temperatures and densities and inflation; generally SMC as a whole should be discarded [1] together with other model possibilities, including string theory solutions, multiverse, quantum loop theories and physics beyond the Standard Model of Particles [ , ]. The 6 7

Journal of Physics: Conference …, 2009

Inflationary cosmology has, in the last few years, received a strong dose of support from observations. The fact that the fluctuation spectrum can be extracted from the inflationary scenario through an analysis that involves quantum field theory in curved space-time, and that it coincides with the observational data has lead to a certain complacency in the community, which prevents the critical analysis of the obscure spots in the derivation. We argue here briefly, as we have discussed in more detail elsewhere, that there is something important missing in our understanding of the origin of the seeds of Cosmic Structure, as is evidenced by the fact that in the standard accounts the inhomogeneity and anisotropy of our universe seems to emerge from an exactly homogeneous and isotropic initial state through processes that do not break those symmetries. This article gives a very brief recount of the problems faced by the arguments based on established physics. The conclusion is that we need some new physics to be able to fully address the problem. The article then exposes one avenue that has been used to address the central issue and elaborates on the degree to which, the new approach makes different predictions from the standard analyses. The approach is inspired on Penrose's proposals that Quantum Gravity might lead to a real, dynamical collapse of the wave function, a process that we argued has the properties needed to extract us from the theoretical impasse described above.

2010

This paper is an abstract of a greater volume of work more than 30 years in formation. It is a thought experiment. In order to present certain concepts, statements are made without supporting scientific observations which would require a substantial manuscript to present. This paper defines a new fabric for space and hypothesizes that matter is formed from this fabric through the agency of Black Holes. Dark sound is theorized. As a consequence of this hypothesis a new model for the origin of the universe is given including new definitions for Black Holes, Dark Matter, and Dark Energy. Neutral electricity, cosmic planes and sub planes are defined. New processes for the coalescing of atoms, the rotation of planets and the observed phenomena of Cosmic Fire are given. Gravity is defined as the result of magnetism and chemical bonds between structures.

This article presents the theory of the "dead universe" as a new perspective on the origin and evolution of the cosmos. It proposes that our universe may have emerged from remnants of a previous universe, vastly larger than the observable universe, which collapsed and perished, transforming into a defunct entity whose laws still influence our cosmos. Furthermore, the theory suggests a second hypothesis, in which this universe, from its very creation, has always been immersed in a state of death-not in the traditional sense of stellar death, but as a primordial existence characterized by the total absence of light. In this chaotic context, light, which was not an intrinsic quality of this universe, emerged as a cosmic anomaly, culminating in the formation of the observable universe, which now resides at the center of a black hole belonging to the dead universe.