In the Institute of Theoretical Physics research in various branches of modern theoretical physics are carried out: in astrophysics and general relativity, atomic optics and quantum physics, classical and quantum field theory, condensed matter theory, elementary particle physics, mathematical physics, quantum gravity and string theory, statistical physics, and the theory of complex systems. Interdisciplinary research are also conducted in the areas of cognitive and brain sciences, quantum computing, artificial intelligence and machine learning. At the Institute more than thirty professors of theoretical physics and over a dozen research groups are active. A large international group of younger scientists is involved in the research: postdoctoral fellows and PhD students.