Class FastLeapFrog

source code

        object --+        
                 |        
AbstractIntegrator --+    
                     |    
              LeapFrog --+
                         |
                        FastLeapFrog

Leap Frog integration scheme implementation that calculates position and momenta at unequal times by concatenating the momentum updates of two successive integration steps. WARNING: intermediate points in trajectories obtained by FastLeapFrog.integrate(init_state, length, return_trajectories=True) are NOT to be interpreted as phase-space trajectories, because position and momenta are not given at equal times! In the initial and the final state, positions and momenta are given at equal times.