Accurate prediction of H sub( 3)O+ and D sub( 3)O+ sensitivity coefficients to probe a variable proton-to-electron mass ratio

The mass sensitivity of the vibration-rotation-inversion transitions of H...O+, H...O+, and D...O+ is investigated variationally using the nuclear motion program trove (Yurchenko, Thiel & Jensen). The calculations utilize new high-level ab initio potential energy and dipole moment surfaces. Alon...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2015-12, Vol.454 (3), p.2292-2292
Main Authors: Owens, A, Yurchenko, S N, Polyansky, O L, Ovsyannikov, R I, Thiel, W, Spirko, V
Format: Article
Language:English
Subjects:
Ammonia
Computation
Energy levels
Mass ratios
Mathematical models
Methyl alcohol
Potential energy
Sensitivity
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Summary:The mass sensitivity of the vibration-rotation-inversion transitions of H...O+, H...O+, and D...O+ is investigated variationally using the nuclear motion program trove (Yurchenko, Thiel & Jensen). The calculations utilize new high-level ab initio potential energy and dipole moment surfaces. Along with the mass dependence, frequency data and Einstein A coefficients are computed for all transitions probed. Particular attention is paid to the ...|k| = 3 and ...|k - l| = 3 transitions comprising the accidentally coinciding |J, K = 0, ... = 0+... and |J, K = 3, ... = 0-... rotation-inversion energy levels. The newly computed probes exhibit sensitivities comparable to their ammonia and methanol counterparts, thus demonstrating their potential for testing the cosmological stability of the proton-to-electron mass ratio. The theoretical trove results are in close agreement with sensitivities obtained using the non-rigid and rigid inverter approximate models, confirming that the ab initio theory used in the present study is adequate. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0035-8711
1365-2966