Nonbonded cutoff schemes

It was also interesting to compare LN behavior as increases to trajectories that use nonbonded cutoffs for very large /c2, behavior of the LN trajectory begins to resemble the cutoff trajectory [88]. This observation suggests that the model itself, rather than the numerical scheme per se, is responsible for the deviations. 

HyperChem supplements the standard MM2 force field (see References on page 106) by providing additional parameters (force constants) using two alternative schemes (see the second part of this book. Theory and Methods). This extends the range of chemical compounds that MM-t can accommodate. MM-t also provides cutoffs for calculating nonbonded interactions and periodic boundary conditions. 

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