摘要
The problem of dark energy is briefly reviewed in both theoretical and observational aspects. In the theoretical aspect, dark energy scenarios are classified into symmetry, anthropie principle, tuning mechanism, modified gravity, quantum cosmology, holographic principle, back-reaction and phenomenologieal types. In the observational aspect, we introduce cosmic probes, dark energy related projects, observational constraints on theoretical models and model independent reconstructions.
基金
Acknowledgements This research was supported by the National Natural Science Foundation of China （Grant Nos. 10535060/A050207, 10975172, and 10821504） and Ministry of Science and Technology 973 Program under grant No. 2007CB815401. Yi Wang acknowledges support from grants from Kavli IPMU, McGill University, the Institute of Particle Physics （Canada） and the Foundational Questions Institute.
