Introduction

The Bath Fitter is the HQS Quantum Simulations tool to fit a given open quantum system with an effective open quantum system with finite degrees of freedom. It provides a BathFitter Python class that includes several methods specifically for the system-bath analysis. These methods are

1. fit_boson_bath_to_boson_bath
2. fit_spin_bath_to_boson_bath
3. fit_boson_bath_to_fermion_bath
4. fit_spin_bath_to_fermion_bath
5. fit_boson_bath_to_spectral_function
6. fit_spin_bath_to_spectral_function
7. spin_bath_trotterstep_from_boson_bath

For further information, the API documentation can be found here.