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Both the ME and MC methods require as input the tunnel rates of all
relevant tunnel events.
On the other hand, the rate formulas for first order
(2.23) and higher order (2.49) tunneling
depend on the change in free energy each tunnel event causes.
Thus, the first part of a simulation is the calculation of the free energy
before and after all possible tunnel events in an arbitrary circuit. With
arbitrary circuit
we mean the arbitrary connection of lumped capacitors, tunnel junctions,
voltage sources, and current sources.

*Christoph Wasshuber*