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The Einstein-Vlasov System with a scalar field

MPG-Autoren

Lee,  Hayoung
Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Zitation

Lee, H. (2005). The Einstein-Vlasov System with a scalar field. In General Relativity and Gravitational Physics: 16th SIGRAV Conference on General Relativity and Gravitational Physics (pp. 217-220).


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0013-4EE3-E
Zusammenfassung
We study the Einstein-Vlasov system coupled to a nonlinear scalar field with a nonnegative potential in locally spatially homogeneous spacetime, as an expanding cosmological model. It is shown that solutions of this system exist globally in time. When the potential of the scalar field is of an exponential form, the cosmological model corresponds to accelerated expansion. The system with an exponential potential shows the causal geodesic completeness of the spacetime towards the future. The asymptotic behavior of solutions of this system in the future time is analysed in various aspects, which shows power-law expansion.