Speaker
Description
Euclidean approaches such as the functional renormalization group (FRG) have been abundantly and successfully used to study the universal static critical behavior of various physical systems near continuous phase transitions. For the study of critical dynamics, on the other hand, one usually relies on real-time methods. This work illustrates the applicability and limitations of using Euclidean systems and the analytically continued FRG (aFRG) to study critical dynamics. In particular, we formulate a dissipative open quantum system in Euclidean spacetime, in the spirit of the Caldeira-Leggett model. Consecutively, we investigate the dynamic critical behavior and compare to real-time results for the dynamic universality class of Model A (according to the classification by Halperin and Hohenberg).
| Affiliation | JLU Giessen |
|---|---|
| Career status | PhD student |