Four-dimensional Chern–Simons theory

Four-dimensional Chern-Simons theory is a theoretical framework in mathematical physics that generalizes the concept of Chern-Simons theory to four dimensions. Chern-Simons theory in three dimensions is a topological field theory defined using a Chern-Simons action, which is typically constructed from a gauge field and a specific combination of its curvature. In four dimensions, the situation becomes more complex.