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Metastability in the early Universe
Physical Review D, 1990The possibility, often explored in the literature, that field theories exhibit metastable vacuum states in the background of a hot expanding universe is examined. By studying the finite-temperature effective potential for self-interacting scalar fields and also for scalar fields interacting with fermion fields, the conditions for the existence of a ...
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Leptogenesis in the Early Universe
Neutrino Physics, 2005The presence of superheavy Majorana neutrinos is an important prediction of unified theories beyond the standard model. An integration of the heavy Majorana neutrinos induces very small masses for neutrinos via the seesaw mechanism. Thus, small neutrino masses is a reflection of a unification at very high energy scale.
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Evolution of the Early Universe
Russian Physics Journal, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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INFLATION IN THE EARLY UNIVERSE
COSMO-97, 1998See the review in Zbl 0946.83500.
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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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2005
Abstract The recognition that the universe is expanding leads naturally to the question of its origins. From what might the universe have expanded? What might the universe have been like when it was much smaller? What does “smaller” mean for a universe?
John F Hawley, Katherine A Holcomb
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Abstract The recognition that the universe is expanding leads naturally to the question of its origins. From what might the universe have expanded? What might the universe have been like when it was much smaller? What does “smaller” mean for a universe?
John F Hawley, Katherine A Holcomb
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2008
Abstract We have been exploring the period in the history of the universe when the radiation temperature dropped from a little over 10 K down to its present value of 2.725 K. We now want to look back to the era when the temperature was greater than about 10 K, well before the energy density in radiation fell below that of baryons and ...
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Abstract We have been exploring the period in the history of the universe when the radiation temperature dropped from a little over 10 K down to its present value of 2.725 K. We now want to look back to the era when the temperature was greater than about 10 K, well before the energy density in radiation fell below that of baryons and ...
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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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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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Confirmation and refutation of very luminous galaxies in the early Universe
Nature, 2023Mark Dickinson +2 more
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