Speaker
Davide Campagnari
(Universität Tübingen)
Description
Dyson-Schwinger equations are an established, powerful non-perturbative tool for QCD. In the Hamiltonian formulation of a quantum field theory they can be used to perform variational calculations with wave functionals going beyond the Gaussian approximation. The various $n$-point functions, needed in expectation values of observables like the Hamilton operator, can be thus expressed in terms of the variational kernels of our trial ansatz. Finally, the equations of motion for these variational kernels are derived by minimizing the energy density.
Primary author
Davide Campagnari
(Universität Tübingen)
Co-authors
Hugo Reinhardt
(Universität Tübingen)
Markus Huber
(University of Graz)
