Chung Wook Kim (Korea Institute for Advanced Study)

A Review of Dark Energy

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  This talk is intended be a pedagogical review of the recent development leading to the discovery of dark energy in the Universe. In the last several years, the evidence of the existence of the so-far unexpected dark energy has been provided by the CMB measurements, supernova Type Ia measurements, the SDSS analyses, X-ray observations of the distance clusters, and other astronomical experiments. By now, the evidence has been elevated to the level of the discovery and the nature of the dark energy has become a subject of an intensive study. After a list of the evidence is reviewed very briefly, some candidates for the dark energy such as the cosmological constant, dynamical scalar fields (quintessence), and other exotic models are discussed.