Published March 2021
| Version v1
Journal article
Scalar and vector perturbations in a universe with nonlinear perfect fluid
- 1. Department of Physics, Istanbul Technical University, Maslak, 34469, Istanbul (Turkey)
- 2. Kapteyn Astronomical Institute, University of Groningen, P.O. Box 800, 9700, AV Groningen (Netherlands)
- 3. Department of Mathematics and Physics, North Carolina Central University, 1801 Fayetteville St, 27707, Durham, NC (United States)
- 4. Astronomical Observatory, Odessa I.I. Mechnikov National University, Dvoryanskaya St. 2, 65082, Odessa (Ukraine)
Description
We study a three-component universe filled with dust-like matter in the form of discrete inhomogeneities (e.g., galaxies) and perfect fluids characterized by linear and nonlinear equations of state. Within the cosmic screening approach, we develop the theory of scalar and vector perturbations. None of the energy density contrasts associated with the distinct components is treated as small. Consequently, the derived equations are valid at both sub- and super-horizon scales and enable simulations for a variety of cosmological models.
Additional details
Identifiers
Publishing Information
- Journal Title
- European Physical Journal. C, Particles and Fields (Online)
- Journal Volume
- 81
- Journal Issue
- 3
- Journal Page Range
- vp.
- ISSN
- 1434-6052
- CODEN
- EPCFFB
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 52098430
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- COSMOLOGICAL MODELS; ENERGY DENSITY; EQUATIONS OF STATE; GALAXIES; IDEAL FLOW; NONLINEAR PROBLEMS; PERTURBATION THEORY; UNIVERSE
- Descriptors DEC
- EQUATIONS; FLUID FLOW; INCOMPRESSIBLE FLOW; MATHEMATICAL MODELS; STEADY FLOW
Optional Information
- Notes
- AID: 246