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Particle horizon
About: Particle horizon is a research topic. Over the lifetime, 2096 publications have been published within this topic receiving 69137 citations.
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TL;DR: In this article, the Friedman universe with the remnant stochastic scalar field in the hybrid inflation model is examined and it is shown that the small effective cosmological constant appears which increases the cosmology expansion.
Abstract: The Friedman Universe with the remnant stochastic scalar field in the hybrid inflation model is examined It is shown that the small effective cosmological constant appears which increases the cosmological expansion
TL;DR: In this article, the authors show that the saturation of the Fischler-Susskind holographic prescription over a closed cosmological model enforces a cosmology evolution very similar to the observed universe.
Abstract: Under the assumption on the fundamental character of the Holographic Principle as a primary principle guiding the behavior of our universe the saturation of the holographic limit is reasonable. On the other hand the Fischler-Susskind holographic prescription seems to be incompatible with closed cosmological models due to the apparently unavoidable recontraction of the particle horizon area. However we will show that the saturation of the Fischler-Susskind holographic prescription over a closed (although almost flat) cosmological model enforces a cosmological evolution very similar to the observed universe.
TL;DR: In this paper, it was shown how a relation between the rate of nucleosynthesis, as measured by the energy generation in the stars, and the cosmical abundance of composite nuclei holds for every stationary model of the universe.
Abstract: It is shown how a relation between the rate of nucleosynthesis, as measured by the energy generation in the stars, and the cosmical abundance of composite nuclei holds for every stationary model of the universe. On the basis of the present experimental data, it seems rather improbable that this relation is satisfied in our actual universe.
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TL;DR: In this paper, an algorithm was designed to reconstruct the background cosmological metric within the class of spherically symmetric dust universes that may include a cosmologically constant.
Abstract: We give an outline of an algorithm designed to reconstruct the background cosmological metric within the class of spherically symmetric dust universes that may include a cosmological constant. Luminosity and age data are used to derive constraints on the geometry of the universe up to a redshift of $z = 1.75$. It is shown that simple radially inhomogeneous void models that are sometimes used as alternative explanations for the apparent acceleration of the late time Universe cannot be ruled out by these data alone.