Metaverses and parallel systems: the state of the art, comparisons and prospects

With the development of technologies such as artificial intelligence and virtual reality, digital technology is continuously changing and enriching human experiences and production methods, and has become a powerful tool for controlling and managing complex systems.Metaverses and parallel systems provide feasible ways for the construction of digital systems and have gained much attention in scientific research and industrial applications.The development status of the metaverses and parallel systems were reviewed, the differences and connections between them were analyzed, and their future development was prospected, which was expected to provide reference and inspiration for the development of intelligent industries, intelligent economies, and intelligent societies.