Gravity and black holes in analog systems

The fusion of gravity and quantum mechanics is important for understanding the origin and essence of space-time. It is also an important open problem in fundamental physics. Theoretical physicists have put forward many conjectures and predictions; however, some phenomena in these predictions are too weak to be confirmed by current experimental measurements or observations. By using suitable analog systems, certain gravitational effects can be transformed into the effects of measurable and controllable systems in the laboratory. These analog systems can not only help people understand the nature of gravity more deeply but also provide inspiration and new ideas for research on other related physical systems. By using concrete examples, this paper will briefly introduce the history and recent progress of studies on analog gravity.