2014/01/31 by Matej Škovran
Physics and Astronomy · #Astrophysics #Big Rip #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Dark energy #De Sitter universe #Ekpyrotic universe #Energy density #Geometry #Isotropy #Metric expansion of space #Perfect fluid #Physics #Quantum mechanics #Scalar (mathematics) #Shear (geology) #Shear modulus #Solar and Space Plasma Dynamics #Tensor (intrinsic definition) #Theoretical physics #Thermodynamics #Universe #gr-qc
paper · pdf · doi:10.1142/s0218271815500637
published as Int. J. Mod. Phys. D 24 (2015) 1550063 · 10 pages
arxiv created 2015/05/21 · arxiv updated 2015/05/22 · openalex publication_date 2015/05/26 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We construct explicit solutions for scalar, vector and tensor perturbations in a less known setting, a flat universe filled by an isotropic elastic solid with pressure and shear modulus proportional to energy density. The solutions generalize the well-known formulas for cosmological perturbations in a universe filled by ideal fluid.