From Spinach Documentation Wiki
euler_angles - (optional) spin system orientation, for solid state systems at low temperature, where the thermal equilibrium depends on the orientation
R - relaxation superoperator
- A variety of relaxation theories are supported, see the relaxation theory parameters section of the online manual.
- Spinach context functions include kinetics superoperators into the total Liovillian automatically.
- The function has been written for minimal memory footprint and performs aggressive memory recycling. Relaxation superoperator dimensions in excess of 1,000,000 are in practice feasible.