摘要:
   We have entered the era of precision cosmology, while the stage IV galaxy surveys are starting to collect data. In the next ~10 years, there will be enormous astrophysical data coming from optical surveys like LSST, DESI, CSST, etc. With these data, we can have an accurate description of the matter/energy content of the Universe, i.e. the large-scale structure. Weak gravitational lensing, which uses the bending of light due to foreground gravity, is one of the most promising cosmological probes. In this talk, I will introduce how weak lensing is used to study cosmology, the interesting applications, and the important problems that we need to solve. Finally, I will quickly explain some of my works, which focus on removing the systematics, in order to get the correct cosmology.