Speaker
Patrik Thunström
(Uppsala University)
Description
The generalized Dynamical Mean Field Theory (DMFT) susceptibility is (formally) derived from the response of the physical system to a small perturbation of the lattice Hamiltonian. The perturbation couples the lattice to an external environment, which allows for the transfer of both momentum and energy. In this setting, the eigenvectors of the generalized susceptibility can be interpreted as a basis in which the perturbations can be expressed. Since the presented construction follows the standard DMFT self-consistency cycle, it is also possible to study the impact of technical approximations, such as the discretization of the hybridization function.
Primary author
Patrik Thunström
(Uppsala University)
