Abstract
The Fisher information has a locality property which allows one to quantify the gradient content of the quantum-mechanical states of a physical system, so grasping the distinctive oscillatory character of the corresponding wavefunctions. We discuss the uncertainty relation fulfilled by the position and momentum Fisher information for general systems, and the tighter uncertainty relation satisfied by the eigenfunctions of arbitrary central potentials. Moreover, we show the usefulness of these two quantities together with the measure of the steric effect for the explanation of the origin of the internal rotation barrier between the eclipsed and staggered conformers of ethane.
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Dehesa, J.S., Esquivel, R.O., Plastino, A.R. et al. Fisher information: uncertainty relation and steric effect. J Russ Laser Res 32, 403–411 (2011). https://doi.org/10.1007/s10946-011-9229-8
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DOI: https://doi.org/10.1007/s10946-011-9229-8