Browse Abstracts & Presentations - 2021 International Symposium on Molecular Spectroscopy by Subject "Mini-symposium: Precision Spectroscopy for Fundamental Physics"

• (International Symposium on Molecular Spectroscopy, 2021-06-24)
We are building a new-generation mid-infrared spectrometer specifically designed for precision vibrational spectroscopy of cold complex polyatomic molecules in the gas phase. The proposed technology is at the forefront of ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Continuous-wave optical parametric oscillators (CW-OPOs) can offer broad tuning with high resolution and high power in the mid-infrared (MIR) and have many important potential applications in precision spectroscopy. The ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
It was recently shown that coupling of ultralight scalar dark matter to the standard model leads to oscillations of fundamental constants and, therefore, may be observed in clock-comparison experiments. Highly charged ions ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
We report an analytic scheme for relativistic exact two-component coupled-cluster singles and doubles with a noniterative triples [X2C-CCSD(T)] calculations of electric effective field, $\varepsilon_{\text{eff}}$, a ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The Standard Model of particle physics (SM) is the most complete theory nowadays; this model predicts all known fundamental particles and explains their interactions unifying three of the four fundamental forces. There are ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
To reproduce accurately experimental values of hyperfine spliting of heavy atoms one have to take into account the corrections for the distribution of charge (the Breit-Rosenthal effect\footnote{M. Crawford, Phys. Rev. 76, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Molecular hydrogen is the subject of intensive theoretical and experimental studies because of its relevance to benchmark quantum electrodynamics models. We report an accurate study of the Q(1) 1-0 line of H$_{2}$ through ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
The accurate determination of molecular transition frequencies can provide stringent tests and constraints on fundamental physics questions [1-3]. Here, we present recent work on a comb-locked cavity ring-down spectroscopy ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
\begin{wrapfigure}{r}{0pt} \includegraphics[scale=0.6]{coca.eps} \end{wrapfigure} Double resonance (DR) spectroscopy has been frequently applied in state-selective excitation and to reach energy levels forbidden to ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
\noindent Helium, as one of the simplest few-electron atoms, is well suited to test fundamental interactions and QED calculations with a high precision. Its importance is underlined by recent advances in the determination ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
One of the great mysteries of modern cosmology is the unknown nature of dark matter. A popular candidate for the dark matter component is the axion – the hypothetical pseudoscalar particle. Despite numerous attempts, the ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The odd isotopologues of ytterbium monohydroxide, $^{171,173}$YbOH, have been identified as promising molecules in which to measure parity (P) and time reversal (T) violating physics. We report on the prerequisite ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
Accurate line lists are important for the description of the spectroscopic nature of small molecules. Given the significant role played by the CN radical in the chemical and astrophysical sciences, we present the process ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
A search for the time-noninvariant ($\mathcal{T}$-odd) interactions is one of the most fundamental not yet resolved problems in physics. The existence of the electric dipole moment (EDM) for any particle violates both ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
To find a new physics beyond the Standard Model (SM), it is necessary to investigate effects that violate the invariance with respect to spatial reflections and time reversal, such as the electric dipole moment of an ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
The aluminium monofluoride (AlF) molecule is a promising candidate for laser cooling and trapping experiments\footnote{Truppe et al., Phys. Rev. A 100, 052513 (2019)}.\\ Here, we describe experiments studying the hyperfine ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
From the precise measurement of the ionization energy of H$_2$ its dissociation energy can be determined\footnote{N. H\"olsch, M. Beyer, E.J. Salumbides, K.S.E. Eikema, W. Ubachs, Ch. Jungen, and F. Merkt, Phys. Rev. Lett., ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
\begin{wrapfigure}{l}{0pt} \includegraphics[scale=0.57]{Figure.eps} \end{wrapfigure} The jet-cooled molybdenum monoxide (MoO) molecule involving seven natural isotopologues from $^{92}$MoO $(14.5\%)$, $^{94}$MoO $(9.2\%)$, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-23)
Precision experiments in the hydrogen atom have a long tradition and extensive studies of transitions between low lying $n\leq12$ states were carried out \footnote{J. C. Garreau \textit{et al.}, J. Phys. France \textbf{51}, ...

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• (International Symposium on Molecular Spectroscopy, 2021-06-24)
We introduce Multispectrum Rotational states Distribution Thermometry (MRDT) as a new optical method for primary thermometry that relies on the global fitting of multiple molecular absorption lines of the same band at ...

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