# Theoretical Physics

This field studies the interplay between physical theories, the insights and intuitions obtained from them, and rigorous mathematics. This applies to many parts of physics, such as classical dynamical systems, statistical mechanics, condensed matter theory, astrophysics, elementary particle theory, gravitation, and string theory. For much of the last 20 years, the work of string theorists has stimulated important developments in geometry. Seiberg-Witten theory is one prime example, which has led to work in pure mathematics.