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gr-qc2024
Azimuthal geodesics in closed FLRW cosmological models
Christian G. Boehmer, Antonio d'Alfonso del Sordo, Betti Hartmann +1
We study geodesics in Friedmann-Lema{\^ı}tre-Robertson-Walker (FLRW) cosmological models and give the full set of solutions. For azimuthal geodesics, in a closed universe, we give…
gr-qc2024★ 9 cited
Cosmological fluids with boundary term couplings
Christian G. Boehmer, Antonio d'Alfonso del Sordo
Cosmological models can be studied effectively using dynamical systems techniques. Starting from Brown's formulation of the variational principle for relativistic fluids, we introd…