classical field theory
physical theory describing classical fields
Hamiltonian field theory
classical field theory in the Hamiltonian formalism
f(R) gravity
theory of gravity whose Lagrangian is some function of the Ricci scalar R
double field theory
classical field theory of gravitation and a 2-form gauge field, where one doubles the number of coordinates to manifest T-duality, inspired by string theory
Lovelock theory of gravity
the most general metric theory of gravity yielding conserved second order equations of motion in an arbitrary number of spacetime dimensions
Galilean electromagnetism
Galilean limit of Maxwell’s equations