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Analysis of Molecular Rotational Spectra

K. Hara·G. A. Lalazissis
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Abstract

Rotational spectra of diatomic molecules measured in the high-precision experiments are analyzed. Such a spectrum is usually fitted by an 8th order polynomial in spin. In fact, from the theoretical point of view, the rotational spectrum is expected to be a smooth function of spin. Thus, fitting the rotational spectrum in terms of a low order polynomial in spin seems to be justified. However, this is not what we found in the present work. We show that the measured spectrum is not necessarily a smooth function of the spin, which is quite surprising. Whether or not it indicates the presence of some hidden physics is an open question.

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K. Hara, G. A. Lalazissis. 1997-12-10. Analysis of Molecular Rotational Spectra. https://arxiv.org/abs/physics/9712017

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