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2013
FIAT LUX. Genesis, 1.3 Extrapolating the present motion of expansion of the universe backward in time, we conclude that the early universe must have been very dense. And extrapolating the (adiabatic) expansion of the cosmic background radiation backward in time, we conclude that the early universe must have been very hot.
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FIAT LUX. Genesis, 1.3 Extrapolating the present motion of expansion of the universe backward in time, we conclude that the early universe must have been very dense. And extrapolating the (adiabatic) expansion of the cosmic background radiation backward in time, we conclude that the early universe must have been very hot.
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2021
Open questions in particle physics include the precise nature of the Higgs sector, the identity of dark matter, and the origin of the matter antimatter symmetry of the universe.I will illustrate how ideas from early universe cosmology and alternative cosmic histories enrich our attempts to answer those fundamental questions and bring observable tests ...
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Open questions in particle physics include the precise nature of the Higgs sector, the identity of dark matter, and the origin of the matter antimatter symmetry of the universe.I will illustrate how ideas from early universe cosmology and alternative cosmic histories enrich our attempts to answer those fundamental questions and bring observable tests ...
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Advances in Space Research, 2000
Abstract The early Universe, at times prior to recombination 10 5.5 years after the Big Bang, can not be studied by looking at individual objects. However, there are several fossils from this epoch that can be studied. These include the abundances of light elements, and especially the Cosmic Microwave Background Radiation (CMBR).
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Abstract The early Universe, at times prior to recombination 10 5.5 years after the Big Bang, can not be studied by looking at individual objects. However, there are several fossils from this epoch that can be studied. These include the abundances of light elements, and especially the Cosmic Microwave Background Radiation (CMBR).
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2004
The standard big bang model of the universe is a very successful one supported by three major pieces of evidence: the expansion of the universe, which constitutes the most natural interpretation of the redshift of galaxies, the existence of a cosmic background of electromagnetic radiation, a relic of the primordial state of high density ...
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The standard big bang model of the universe is a very successful one supported by three major pieces of evidence: the expansion of the universe, which constitutes the most natural interpretation of the redshift of galaxies, the existence of a cosmic background of electromagnetic radiation, a relic of the primordial state of high density ...
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2020
In this chapter the history of the universe through the first ten microseconds of its existence will be described. First, in Sect. 9.1 the Planck scale, where quantum-mechanical and gravitational effects both become important, will be defined. This sets the starting point for the theory to be described. In Sects.
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In this chapter the history of the universe through the first ten microseconds of its existence will be described. First, in Sect. 9.1 the Planck scale, where quantum-mechanical and gravitational effects both become important, will be defined. This sets the starting point for the theory to be described. In Sects.
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2014
In Chap. 18 we saw how Cepheid stars and type Ia supernovae have been used to measure the expansion of the universe. If we run the clock backward, we deduce that in the past the universe was smaller, denser, and hotter than it is today. In this chapter we use gas physics and particle physics to understand the early, hot phase of the universe, and we ...
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In Chap. 18 we saw how Cepheid stars and type Ia supernovae have been used to measure the expansion of the universe. If we run the clock backward, we deduce that in the past the universe was smaller, denser, and hotter than it is today. In this chapter we use gas physics and particle physics to understand the early, hot phase of the universe, and we ...
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1987
The Quantum Origin of the Universe.- Cosmology and Particle Physics.- Supersymmetry and the Early Universe.- Relativistic Cosmology.- Yet Another Scenario for Galaxy Formation.- Non-Gaussian Fluctuations.- N-body Methods and the Formation of Large-Scale Structure.- Numerical Relativity and Cosmology.- Distortions and Anisotropies of the Cosmic ...
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The Quantum Origin of the Universe.- Cosmology and Particle Physics.- Supersymmetry and the Early Universe.- Relativistic Cosmology.- Yet Another Scenario for Galaxy Formation.- Non-Gaussian Fluctuations.- N-body Methods and the Formation of Large-Scale Structure.- Numerical Relativity and Cosmology.- Distortions and Anisotropies of the Cosmic ...
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