TDLanczosTol

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TDLanczosTol

Section Time-Dependent::Propagation
Type float
Default 1e-5

An internal tolerance variable for the Lanczos method. The smaller, the more precisely the exponential is calculated, and also the bigger the dimension of the Krylov subspace needed to perform the algorithm. One should carefully make sure that this value is not too big, or else the evolution will be wrong.


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