Is the observable Universe consistent with the cosmological principle?
Indian Institute of Technology BHU · Banaras Hindu University · +28 more institutions
Abstract
Abstract The cosmological principle (CP)—the notion that the Universe is spatially isotropic and homogeneous on large scales—underlies a century of progress in cosmology. It is conventionally formulated through the Friedmann-Lemaître-Robertson-Walker (FLRW) cosmologies as the spacetime metric, and culminates in the successful and highly predictive Λ-Cold-Dark-Matter (ΛCDM) model. Yet, tensions have emerged within the ΛCDM model, most notably a statistically significant discrepancy in the value of the Hubble constant, H 0 . Since the notion of cosmic expansion determined by a single parameter is intimately tied to the CP, implications of the H 0 tension may extend beyond ΛCDM to the CP itself. This review…
Citation impact
- FWCI
- 39.89
- Percentile
- 100%
- References
- 797
Authors
23- PKPavan K. Aluri
Indian Institute of Technology BHU, Banaras Hindu University
- PCPaolo Cea
Istituto Nazionale di Fisica Nucleare, Sezione di Bari
- PCPravabati Chingangbam
Korea Institute for Advanced Study, Indian Institute of Astrophysics
- MCM. C. Chu
Chinese University of Hong Kong, Institute of Theoretical Physics
- RGR. G. Clowes
University of Lancashire
Topics & keywords
- Physics
- Friedmann–Lemaître–Robertson–Walker metric
- Theoretical physics
- Cosmology
- Astrophysics
- Cosmological principle
- Cosmological constant
- Cosmic microwave background