- Non-extensive statistical mechanics: This field of study explores the application of statistical mechanics to systems that are out of equilibrium or have long-range interactions. Plastino has made significant contributions to this field, developing a number of new theoretical frameworks and demonstrating their application to real-world systems.
- Quantum mechanics: Plastino has also written extensively on various aspects of quantum mechanics, including the foundations of the theory, the relationship between quantum mechanics and classical physics, and the development of new quantum algorithms.
- Complexity theory: This field of study explores the behaviour of complex systems, such as biological systems, social systems, and economic systems. Plastino has written on the application of complexity theory to various problems in physics, including the study of chaos and self-organisation.
- Cosmology: Plastino has also written on various topics in cosmology, such as the origin and evolution of the universe, the nature of dark matter and dark energy, and the possibility of life in the universe.
Plastino is a prolific author and his work has been published in a wide range of journals and books. He is also a frequent speaker at conferences and workshops, and his work has had a significant impact on the field of physics.