Real-time dynamics in quantum impurity models with diagrammatic Monte Carlo

Marco Schiró
2010 Physical Review B  
We extend the recently developed real-time Diagrammatic Monte Carlo method, in its hybridization expansion formulation, to the full Kadanoff-Baym-Keldysh contour. This allows us to study real-time dynamics in correlated impurity models starting from an arbitrary, even interacting, initial density matrix. As a proof of concept we apply the algorithm to study the non equilibrium dynamics after a local quantum quench in the Anderson Impurity Model. Being a completely general approach to real-time
more » ... ynamics in quantum impurity models it can be used as a solver for Non Equilibrium Dynamical Mean Field Theory.
doi:10.1103/physrevb.81.085126 fatcat:qrdmrgzcgndq5j47ftxouioz5e