[RBRC seminar] Spectral functions from the real-time functional renormalization group

by Philipp Scior (BNL)

Thursday 18 Feb 2021, 09:00 → 11:00 US/Eastern

We employ the functional renormalization group approach formulated on the Schwinger-Keldysh contour to calculate real-time correlation functions in scalar field theories. We provide a detailed description of the formalism, discuss suitable truncation schemes for real-time calculations as well as the numerical procedure to self-consistently solve the flow equations for the spectral function. Subsequently, we discuss the relations to other perturbative and non-perturbative approaches to calculate spectral functions, and present a detailed comparison and benchmark in d=0+1dimensions.

 

 

https://bnl.zoomgov.com/j/1618041206?pwd=VjN2NVVwUUFKczlsQnlEMEloZkIvdz09