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Updated: Dec 27, 2025
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Measurement of Ultrafast Vibrational Coherences in Polyatomic Radical Cations with Strong-Field Adiabatic Ionization
Published on: August 6, 2018
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Enhanced P,T-violating nuclear magnetic quadrupole moment effects in laser-coolable molecules
Malika Denis1, Yongliang Hao1, Ephraim Eliav2
1Faculty of Science and Engineering, Van Swinderen Institute for Particle Physics and Gravity, University of Groningen, 9747 AG Groningen, The Netherlands.
The Journal of Chemical Physics
|March 2, 2020
Summary
We calculated nuclear magnetic quadrupole moments (MQMs) in molecules, probing physics beyond the standard model. Our accurate calculations provide crucial data for experiments searching for new fundamental symmetries.
Area of Science:
- Atomic and Molecular Physics
- High Energy Physics
- Quantum Chemistry
Background:
- Nuclear magnetic quadrupole moments (MQMs) are sensitive probes of physics beyond the Standard Model.
- Violation of parity and time-reversal symmetry by MQMs offers a unique window into new fundamental interactions.
- Previous theoretical calculations of MQM interaction constants have limitations in accuracy.
Purpose of the Study:
- To perform accurate relativistic coupled cluster calculations of nuclear MQM interaction constants.
- To investigate MQM interactions in the molecules BaF, YbF, BaOH, and YbOH.
- To estimate the uncertainties associated with the calculated MQM interaction constants.
Main Methods:
- Relativistic coupled cluster (RCC) theory
- High-level ab initio quantum chemistry calculations
- Accurate treatment of electron correlation and relativistic effects
Main Results:
- Precise calculation of nuclear MQM interaction constants for BaF, YbF, BaOH, and YbOH.
- Detailed analysis and estimation of the uncertainties in the calculated values.
- The results provide benchmark data for experimental searches.
Conclusions:
- The calculated MQM interaction constants are essential for interpreting experimental results.
- These findings contribute to the ongoing search for physics beyond the Standard Model.
- The study highlights the power of advanced quantum chemistry methods in fundamental physics research.
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