期刊
PHYSICS OF THE DARK UNIVERSE
卷 12, 期 -, 页码 56-99出版社
ELSEVIER
DOI: 10.1016/j.dark.2016.02.001
关键词
Cosmology; Dark energy; Cosmological constant problem; Modified gravity; Dark matter; Early universe
资金
- European Research Council [StG2010-257080]
- DFG [TRR33]
- All Souls College, Oxford
- project Digitizing the universe: precision modeling for precision cosmology'' - Italian Ministry of Education, University and Research (MIUR)
- Return Grant program of the Belgian Science Policy (BELSPO)
- Research Council of Norway [216756]
- STFC [ST/L00075X/1]
- Swedish Research Council [621-2013-428]
- John Templeton Foundation
- Fundacao para a Ciencia e Tecnologia (FCT) [SFRH/BPD/95204/2013, UID/FIS/04434/2013]
- FCT [UID/FIS/04434/2013, IF/01518/2014]
- ERC Starting Grant cosmoIGM''
- INFN IS PD51 INDARK''
- ERC under the European Community's Seventh Framework Programme (FP7) [307934]
- Science and Technology Facilities Council [ST/K00090X/1, ST/L00075X/1, ST/N000668/1] Funding Source: researchfish
- STFC [ST/N000668/1, ST/L00075X/1, ST/K00090X/1] Funding Source: UKRI
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/95204/2013] Funding Source: FCT
- ICREA Funding Source: Custom
Despite its continued observational successes, there is a persistent (and growing) interest in extending cosmology beyond the standard model, Lambda CDM. This is motivated by a range of apparently serious theoretical issues, involving such questions as the cosmological constant problem, the particle nature of dark matter, the validity of general relativity on large scales, the existence of anomalies in the CMB and on small scales, and the predictivity and testability of the inflationary paradigm. In this paper, we summarize the current status of Lambda CDM as a physical theory, and review investigations into possible alternatives along a number of different lines, with a particular focus on highlighting the most promising directions. While the fundamental problems are proving reluctant to yield, the study of alternative cosmologies has led to considerable progress, with much more to come if hopes about forthcoming high-precision observations and new theoretical ideas are fulfilled. (C) 2016 Elsevier B.V. All rights reserved.
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