SENSITIVITY OF THE H3O+ INVERSION-ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO

	SENSITIVITY OF THE H3O+ INVERSION-ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO
	Kozlov, M. G.1,2; Levshakov, S. A.3
刊名	ASTROPHYSICAL JOURNAL
	2011-01-10
卷号	726 期号:2 页码:1
关键词	dark energy elementary particles ISM: molecules molecular data techniques: radial velocities
英文摘要	Quantum-mechanical tunneling inversion transition in ammonia (NH3) is actively used as a sensitive tool to study possible variations of the electron-to-proton mass ratio, mu = m(e)/m(p). The molecule H3O+ has the inversion barrier significantly lower than that of NH3. Consequently, its tunneling transition occurs in the far-infrared (FIR) region and mixes with rotational transitions. Several such FIR and submillimeter transitions are observed from the interstellar medium in the Milky Way and in nearby galaxies. We show that the rest-frame frequencies of these transitions are very sensitive to the variation of mu, and that their sensitivity coefficients have different signs. Thus, H3O+ can be used as an independent target to test hypothetical changes in mu measured at different ambient conditions of high (terrestrial) and low (interstellar medium) matter densities. The environmental dependence of mu and coupling constants is suggested in a class of chameleon-type scalar field models-candidates to dark energy carrier.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	SIDE-BAND SPECTROSCOPY ; INTERSTELLAR H3O+ ; LABORATORY MEASUREMENT ; COSMOLOGICAL CONSTANT ; DARK ENERGY ; LINE ; SUBMILLIMETER ; TRANSITION ; DISCOVERY ; UNIVERSE
收录类别	SCI
语种	英语
WOS记录号	WOS:000285623600009
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/26405]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Yale Univ, Dept Phys, New Haven, CT 06520 USA 2.Petersburg Nucl Phys Inst, Gatchina 188300, Russia 3.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China
推荐引用方式 GB/T 7714	Kozlov, M. G.,Levshakov, S. A.. SENSITIVITY OF THE H3O+ INVERSION-ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO[J]. ASTROPHYSICAL JOURNAL,2011,726(2):1.
APA	Kozlov, M. G.,&Levshakov, S. A..(2011).SENSITIVITY OF THE H3O+ INVERSION-ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO.ASTROPHYSICAL JOURNAL,726(2),1.
MLA	Kozlov, M. G.,et al."SENSITIVITY OF THE H3O+ INVERSION-ROTATIONAL SPECTRUM TO CHANGES IN THE ELECTRON-TO-PROTON MASS RATIO".ASTROPHYSICAL JOURNAL 726.2(2011):1.