Cosmology — Library Silo
Cosmology is the study of the universe as a whole: its origin, content, geometry, history and ultimate fate. The modern framework is the ΛCDM model, in which roughly 68% of the energy density is dark energy, 27% is dark matter, and 5% is ordinary baryonic matter.
Foundational observations include the Hubble–Lemaître expansion law, the cosmic microwave background (~2.725 K blackbody), Big Bang nucleosynthesis abundance predictions for the light elements, and the late-time accelerated expansion measured from Type Ia supernovae. The current Hubble tension — a ~5% disagreement between early- and late-universe measurements of H0 — is one of the field's active open problems.
Recent research on this topic from arXiv
Preprints and papers indexed on arXiv.org. Links open the public abstract pages.
- Dark Sector Cosmology
Ricardo C. G. Landim · 2017 ·arXiv:1702.06024v1
The dark side of the universe is mysterious and its nature is still unknown. In fact, this poses perhaps as the biggest challenge in the modern cosmology. The two components of the dark sector (dark matter and dark energy) correspond today... - Scaling Cosmology
Winfried Zimdahl, Diego Pavón · 2002 ·arXiv:0210484v1
We show that with the help of a suitable coupling between dark energy and cold dark matter it is possible to reproduce any scaling solution $ρ_{X}\propto ρ_{M}a^ξ$, where $ρ_{X}$ and $ρ_{M}$ are the densities of dark energy and dark matter,... - The Cosmology of Dark Energy Radiation
Kim V. Berghaus, Tanvi Karwal, Vivian Miranda et al. · 2023 ·arXiv:2311.08638v2
In this work, we quantify the cosmological signatures of dark energy radiation -- a novel description of dark energy, which proposes that the dynamical component of dark energy is comprised of a thermal bath of relativistic particles source... - Designer Cosmology
Bruce A. Bassett, David Parkinson, Robert C. Nichol · 2004 ·arXiv:0409266v2
We highlight the flexibility of the IPSO experiment-design framework by contrasting its application to CMB, weak lensing and redshift surveys. We illustrate the latter with a 10 parameter MCMC D-optimisation of a dark energy redshift survey...