Analytic continuation

The analytic continuation is a method to obtain the real-frequency Green’s function from the imaginary-frequency Green’s function. The program dcore_anacont performs the analytic continuation with the Pade approximation and the sparse-modeling method.

• Analytic continuation with the Pade approximation
• Analytic continuation with the sparse-modeling method

Users can also use external codes for the analytic continuation.

• How to use an external AC code