| Abstract
| - When the calculation of a unimolecular reaction rate constant is cast in the form of a master equation eigenvalueproblem, the magnitude of that rate is often smaller than the rounding error of the trace of the correspondingreaction matrix. Two available methods to overcome this cancellation problem are examined, and it is shownthat one of them, the Nesbet procedure, can fail if the master equation relaxation matrix is improperlynormalized, or when some time-saving computational approximations are used.
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