Free Meson Seminars

Complex Langevin for Complex Actions: Some Recent Developments

by Dr. Anosh Joseph (Indian Institute of Science Education and Research (IISER) Mohali)

Thursday, October 22, 2020 from to (Asia/Kolkata)
at Zoom
Description Please contact rishi(at)theory(dot)tifr(dot)res(dot)in for the zoom meeting id and the password for this seminar.

Complex Langevin dynamics with stochastic quantization can be used to study quantum field theories with complex actions. This method can open up a promising direction in the study of non-perturbative physics of QCD at finite density and temperature. We discuss some simple lower-dimensional quantum field theory models with complex actions and show that complex Langevin dynamics can capture the physics reliably. These are the situations where the traditional Monte Carlo simulations fail. We explore models exhibiting non-perturbative supersymmetry breaking. We also discuss a complex unitary matrix model, which serves as an effective description of a QCD at finite density and temperature with arbitrary number of colors and quark flavors, defined on a compact manifold.