Accurate prediction of the ammonia probes of a variable proton-to-electron mass ratio

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10320942" target="_blank" >RIV/00216208:11320/15:10320942 - isvavai.cz</a>
Alternative codes found
RIV/61388963:_____/15:00445795
Result on the web
<a href="http://dx.doi.org/10.1093/mnras/stv869" target="_blank" >http://dx.doi.org/10.1093/mnras/stv869</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stv869" target="_blank" >10.1093/mnras/stv869</a>

Result language
angličtina
Original language name
Accurate prediction of the ammonia probes of a variable proton-to-electron mass ratio
Original language description
A comprehensive study of the mass sensitivity of the vibration-rotation-inversion transitions of (NH3)-N-14, (NH3)-N-15, (ND3)-N-14 and (ND3)-N-15 is carried out variationally using the trove approach. Variational calculations are robust and accurate, offering a new way to compute sensitivity coefficients. Particular attention is paid to the Delta k = +/- 3 transitions between the accidentally coinciding rotation-inversion energy levels of the nu(2) = 0(+), 0(-), 1(+) and 1(-) states, and the inversiontransitions in the nu(4) = 1 state affected by the 'giant' l-type doubling effect. These transitions exhibit highly anomalous sensitivities, thus appearing as promising probes of a possible cosmological variation of the proton-to-electron mass ratio mu.Moreover, a simultaneous comparison of the calculated sensitivities reveals a sizeable isotopic dependence which could aid an exclusive ammonia detection.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CF - Physical chemistry and theoretical chemistry
OECD FORD branch
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Project
<a href="/en/project/GA15-10267S" target="_blank" >GA15-10267S: Molecular processes in the Universe</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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