Essays about: "FLRW models"
Found 4 essays containing the words FLRW models.
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1. Models of the Universe : An analysis of the asymptotic behaviour of non-linear dynamical systems
University essay from KTH/Skolan för teknikvetenskap (SCI)Abstract : In this thesis we present some relevant theory, and then we rigorously investigate the existence intervals and the asymptotic behaviors of three cosmological models. The first model we investigate is based on the Friedmann-Lemaître-Robertson-Walker (FLRW) metric, which is consistent with the cosmological principle. READ MORE
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2. Decay of solutions to the Klein-Gordon equation on some expanding cosmological spacetimes
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : The decay of solutions to the Klein-Gordon equation is studied in two expanding cosmological spacetimes, namely (1) the de Sitter universe in flat Friedmann-Lemaitre-Robertson-Walker (FLRW) form, and (2) the cosmological region of the Reissner-Nordström-de Sitter (RNdS) model. Using energy methods, for initial data with finite higher order energies, bounds on the decay rates of the solution are obtained. READ MORE
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3. Simple cosmological models and their descriptions of the universe
University essay from Linköpings universitet/Matematik och tillämpad matematikAbstract : Cosmology is the study of the universe as a whole, and attempts to describe the behaviour of the universe mathematically. The simplest relativistic cosmological models are derived from Einstein's field equations with the assumptions of isotropy and homogeneity. READ MORE
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4. Dynamics of Discrete Irregular Cosmological Models
University essay from Stockholms universitet/FysikumAbstract : This thesis investigates the dynamics of a set of 8-600 Schwarzschild masses, randomly distributed inside cells which tessellate a 3-sphere. Furthermore the contents of each cell are mirror images of its neighbor. READ MORE