Small Scale Problems of the ΛCDM Model: A Short Review
AbstractThe ΛCDM model, or concordance cosmology, as it is often called, is a paradigm at its maturity. It is clearly able to describe the universe at large scale, even if some issues remain open, such as the cosmological constant problem, the small-scale problems in galaxy formation, or the unexplained anomalies in the CMB. ΛCDM clearly shows difficulty at small scales, which could be related to our scant understanding, from the nature of dark matter to that of gravity; or to the role of baryon physics, which is not well understood and implemented in simulation codes or in semi-analytic models. At this stage, it is of fundamental importance to understand whether the problems encountered by the ΛDCM model are a sign of its limits or a sign of our failures in getting the finer details right. In the present paper, we will review the small-scale problems of the ΛCDM model, and we will discuss the proposed solutions and to what extent they are able to give us a theory accurately describing the phenomena in the complete range of scale of the observed universe. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Del Popolo, A.; Le Delliou, M. Small Scale Problems of the ΛCDM Model: A Short Review. Galaxies 2017, 5, 17.
Del Popolo A, Le Delliou M. Small Scale Problems of the ΛCDM Model: A Short Review. Galaxies. 2017; 5(1):17.Chicago/Turabian Style
Del Popolo, Antonino; Le Delliou, Morgan. 2017. "Small Scale Problems of the ΛCDM Model: A Short Review." Galaxies 5, no. 1: 17.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.