Lennart Brocki

Functional Schrödinger Picture and Wheeler-DeWitt Equation

In quantum field theory one usually employs the Fock basis to represent the eigenstates of the Hamiltonian, but there exists, in full analogy to quantum mechanics, a functional Schrödinger picture in field theories. I will give a brief overview of this formalism and also present some notions of canonical quantum gravity, which is one of its main applications. In this context I will speak about the quantization of constrained systems and the Wheeler-DeWitt equation.