netket.experimental.dynamics.RK23#

netket.experimental.dynamics.RK23(dt, **kwargs)#

2nd order adaptive solver with 3rd order error control, using the Bogacki–Shampine coefficients

Parameters

  • dt – Timestep (floating-point number). When adaptive==False this value is never changed, when adaptive == True this is the initial timestep.

  • adaptive – Whether to use adaptive timestepping (Defaults to False). Not all integrators support adaptive timestepping.

  • atol – Maximum absolute error at every time-step during adaptive timestepping. A larger value will lead to larger timestep. This option is ignored if adaptive=False. A value of 0 means it is ignored. Note that the norm used to compute the error can be changed in the netket.experimental.TDVP driver. (Defaults to 0).

  • rtol – Maximum relative error at every time-step during adaptive timestepping. A larger value will lead to larger timestep. This option is ignored if adaptive=False. Note that the norm used to compute the error can be changed in the netket.experimental.TDVP driver. (Defaults to 1e-7)

  • dt_limits – A length-2 tuple of minimum and maximum timesteps considered by adaptive time-stepping. A value of None signals that there is no bound. Defaults to (None, 10*dt).