Quantum creation of the inflationary universe
- Materials Science
SummaryIt is shown that the process of quantum creation of the universe in a wide class of elementary-particle theories with a large probability leads to creation of an exponentially expanding…
Cascade birth of universes in multidimensional spaces
The formation mechanism of universes with distinctly different properties is considered within the framework of pure gravity in a space of D > 4 dimensions. The emergence of the Planck scale and its…
Conceptions of Cosmos: From Myths to the Accelerating Universe: A History of Cosmology
Introduction 1. From Myths to the Copernican Universe 2. The Newtonian Era 3. Foundations of Modern Cosmology 4. The Hot Big Bang 5. New Horizons
Birth of a Closed Universe of Negative Spatial Curvature
We propose a modified form of the spontaneousbirth of the universe by quantum tunneling. It proceedsthrough topology change and inflation, to eventuallybecome a universe with closed spatial sections…
The quantum origin of the universe.
- Physics, Education
Here is a description of some of the modern day beliefs about the origin of the universe and quantum gravity. There are occasional glimpses of the wide areas of ignorance which should provide…
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Cosmological Density Fluctuations Produced by Vacuum Strings
It is shown that vacuum strings produced in the early universe at the grand unification phase transition can generate density fluctuations sufficient to explain the galaxy formation.
Is the Universe a Vacuum Fluctuation?
The author proposes a big bang model in which our Universe is a fluctuation of the vacuum, in the sense of quantum field theory. The model predicts a Universe which is homogeneous, isotropic and…
Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
The treatment of first-order phase transitions for standard grand unified theories is shown to break down for models with radiatively induced spontaneous symmetry breaking. It is argued that proper…