Seminar:- Does Dark Matter Interact with Dark Energy?
In the standard cosmological model, LCDM model, dark matter and dark energy are the most abundant two components of the universe. However, we almost know nothing about the nature of these dark sectors. A natural question can be raised, do these two components have some interaction beyond gravity? After many years of effort, we can finally answer this question, making full use of all the current observations, which has never been done before. We conclude that the LCDM model is still favored by our analysis, but some weak signatures indicate that dark matter is converting into dark energy in today's universe. We also disclose the possibility to look for smoking guns of dark matter dark energy interaction. In this talk, the speaker will introduce how we model such interaction, how we do simulations and how we use the photos of the sky to test.
講者：張佳駿 博士 Dr. Jiajun ZHANG(中國上海交通大學天文系)