Publication

Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation

Beloy, K., Kozlov, M. G., Borschevsky, A., Hauser, A. W., Flambaum, V. V. & Schwerdtfeger, P., 30-Jun-2011, In : Physical Review A. 83, 6, 7 p., 062514.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Beloy, K., Kozlov, M. G., Borschevsky, A., Hauser, A. W., Flambaum, V. V., & Schwerdtfeger, P. (2011). Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation. Physical Review A, 83(6), [062514]. https://doi.org/10.1103/PhysRevA.83.062514

Author

Beloy, K. ; Kozlov, M. G. ; Borschevsky, A. ; Hauser, A. W. ; Flambaum, V. V. ; Schwerdtfeger, P. / Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation. In: Physical Review A. 2011 ; Vol. 83, No. 6.

Harvard

Beloy, K, Kozlov, MG, Borschevsky, A, Hauser, AW, Flambaum, VV & Schwerdtfeger, P 2011, 'Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation', Physical Review A, vol. 83, no. 6, 062514. https://doi.org/10.1103/PhysRevA.83.062514

Standard

Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation. / Beloy, K.; Kozlov, M. G.; Borschevsky, A.; Hauser, A. W.; Flambaum, V. V.; Schwerdtfeger, P.

In: Physical Review A, Vol. 83, No. 6, 062514, 30.06.2011.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Beloy K, Kozlov MG, Borschevsky A, Hauser AW, Flambaum VV, Schwerdtfeger P. Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation. Physical Review A. 2011 Jun 30;83(6). 062514. https://doi.org/10.1103/PhysRevA.83.062514


BibTeX

@article{ba50807c34904645b86f392f235cab76,
title = "Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation",
abstract = "We identify the molecular ion NH+ as a potential candidate for probing variations in the fine-structure constant alpha and electron-to-proton mass ratio mu. NH+ has an anomalously low-lying excited (4)Sigma(-) state, being only a few hundred cm(-1) above the ground (2)Pi state. Being a light molecule, this proximity is such that rotational levels of the respective states are highly intermixed for low angular momenta. We find that several low-frequency transitions within the collective rotational spectrum experience enhanced sensitivity to alpha and mu variation. This is attributable to the close proximity of the (2)Pi and (4)Sigma(-) states, as well as the ensuing strong spin-orbit coupling between them. Suggestions that NH+ may exist in interstellar space and recent predictions that trapped-ion precision spectroscopy will be adaptable to molecular ions make NH+ a promising system for future astrophysical and laboratory studies of alpha and mu variation.",
keywords = "ELECTRON MASS-RATIO, FUNDAMENTAL CONSTANTS, WAVE-FUNCTIONS, BASIS-SETS, SENSITIVITY, INVERSION, TH-229",
author = "K. Beloy and Kozlov, {M. G.} and A. Borschevsky and Hauser, {A. W.} and Flambaum, {V. V.} and P. Schwerdtfeger",
year = "2011",
month = "6",
day = "30",
doi = "10.1103/PhysRevA.83.062514",
language = "English",
volume = "83",
journal = "Physical Review A",
issn = "1050-2947",
publisher = "AMER PHYSICAL SOC",
number = "6",

}

RIS

TY - JOUR

T1 - Rotational spectrum of the molecular ion NH+ as a probe for alpha and m(e)/m(p) variation

AU - Beloy, K.

AU - Kozlov, M. G.

AU - Borschevsky, A.

AU - Hauser, A. W.

AU - Flambaum, V. V.

AU - Schwerdtfeger, P.

PY - 2011/6/30

Y1 - 2011/6/30

N2 - We identify the molecular ion NH+ as a potential candidate for probing variations in the fine-structure constant alpha and electron-to-proton mass ratio mu. NH+ has an anomalously low-lying excited (4)Sigma(-) state, being only a few hundred cm(-1) above the ground (2)Pi state. Being a light molecule, this proximity is such that rotational levels of the respective states are highly intermixed for low angular momenta. We find that several low-frequency transitions within the collective rotational spectrum experience enhanced sensitivity to alpha and mu variation. This is attributable to the close proximity of the (2)Pi and (4)Sigma(-) states, as well as the ensuing strong spin-orbit coupling between them. Suggestions that NH+ may exist in interstellar space and recent predictions that trapped-ion precision spectroscopy will be adaptable to molecular ions make NH+ a promising system for future astrophysical and laboratory studies of alpha and mu variation.

AB - We identify the molecular ion NH+ as a potential candidate for probing variations in the fine-structure constant alpha and electron-to-proton mass ratio mu. NH+ has an anomalously low-lying excited (4)Sigma(-) state, being only a few hundred cm(-1) above the ground (2)Pi state. Being a light molecule, this proximity is such that rotational levels of the respective states are highly intermixed for low angular momenta. We find that several low-frequency transitions within the collective rotational spectrum experience enhanced sensitivity to alpha and mu variation. This is attributable to the close proximity of the (2)Pi and (4)Sigma(-) states, as well as the ensuing strong spin-orbit coupling between them. Suggestions that NH+ may exist in interstellar space and recent predictions that trapped-ion precision spectroscopy will be adaptable to molecular ions make NH+ a promising system for future astrophysical and laboratory studies of alpha and mu variation.

KW - ELECTRON MASS-RATIO

KW - FUNDAMENTAL CONSTANTS

KW - WAVE-FUNCTIONS

KW - BASIS-SETS

KW - SENSITIVITY

KW - INVERSION

KW - TH-229

U2 - 10.1103/PhysRevA.83.062514

DO - 10.1103/PhysRevA.83.062514

M3 - Article

VL - 83

JO - Physical Review A

JF - Physical Review A

SN - 1050-2947

IS - 6

M1 - 062514

ER -

ID: 31141679