feldtheoretischer
Feldtheoretischer is a German adjective meaning "field-theoretical." It is used in physics and mathematics to describe concepts, methods, or approaches related to field theory. Field theory, in this context, is a framework that describes physical phenomena in terms of fields, which are quantities that exist at every point in space and time. Examples include electromagnetic fields, gravitational fields, and quantum fields.
A "feldtheoretischer Ansatz" (field-theoretical approach) would involve using the mathematical tools and principles of field theory
The term can also be applied to specific models or theories that are formulated within the framework