Key points are not available for this paper at this time.
It is proposed to set stringent limits on possible nonlinear corrections to ordinary quantum mechanics by searching for the detuning of resonant transitions. A suggested nonlinear generalization of quantum mechanics is used to show that such detuning would be expected in the rf transition in ^9Be^+ ions that is used to set frequency standards. Measurements at the National Bureau of Standards already set limits of order 10^-21 on the fraction of the energy of the ^9Be nucleus that could be due to nonlinear corrections to quantum mechanics, with good prospects of improving this by 2-3 orders of magnitude.
Steven Weinberg (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: