Linear polyatomic molecules with Π ground state: sensitivity to variation of the fundamental constants

Abstract

In polyatomic molecules with Π electronic ground state the ro-vibrational spectrum can be strongly modified by the Renner-Teller effect. The linear form of C3H molecule has particularly strong Renner-Teller interaction and a very low lying vibronic Σ+ level, which corresponds to the excited bending vibrational mode. This leads to the increased sensitivities of the microwave and submillimeter transition frequencies to the possible variation of the fine structure constant alpha and electron to proton mass ratio mu.

10 pages, RevTeX; v2: one figure added and hyperfine structure included

References in corpus (13)

• Molecules at z=0.89: A 4-mm-rest-frame absorption line survey toward PKS 1830-211
• Molecular Carbon Chains and Rings in TMC-1
• Ultracold molecules: new probes on the variation of fundamental constants
• Methanol as a tracer of fundamental constants
• Methods for Constraining Fine Structure Constant Evolution with OH Microwave Transitions
• Constraining the variation of fundamental constants using 18cm OH lines
• Constraining fundamental constant evolution with HI and OH lines
• $\Lambda$-doublet spectra of diatomic radicals and their dependence on fundamental constants
• First cosmological constraints on the proton-to-electron mass ratio from observations of rotational transitions of methanol
• Rotational spectrum of molecular ion NH^+ as a probe for alpha- and m_e/m_p-variation
• Sensitivity of rotational transitions in CH and CD to a possible variation of fundamental constants
• Sensitivity of the isotopologues of hydronium to variation of the electron-to-proton mass ratio
• Sensitivity of microwave transition in H2O2 to variation of the electron-to-proton mass ratio

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