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Permanent electric dipole moments (EDMs) of fundamental particles such as the electron are signatures of parity and time-reversal violation due to physics beyond the standard model. EDM measurements probe new physics at energy scales well…

Atomic Physics · Physics 2020-10-09 Mohit Verma , Andrew M. Jayich , Amar C. Vutha

The current status of electric dipole moments of diamagnetic atoms which involves the synergy between atomic experiments and three different theoretical areas -- particle, nuclear and atomic is reviewed. Various models of particle physics…

High Energy Physics - Phenomenology · Physics 2017-04-05 N. Yamanaka , B. K. Sahoo , N. Yoshinaga , T. Sato , K. Asahi , B. P. Das

Electric dipole moment (EDM) measurements using paramagnetic molecules have significantly advanced over the last decade. Traditionally, these experiments have been analyzed in terms of the electron EDM. However, paramagnetic molecules are…

High Energy Physics - Phenomenology · Physics 2026-05-20 Wouter Dekens , Jordy de Vries , Lemonia Gialidi , Javier Menéndez , Heleen Mulder , Beatriz Romeo

Exposing a molecule to intense light pulses may bring this molecule to a nonstationary quantum state, thus launching correlated dynamics of electronic and nuclear subsystems. Although much had been achieved in the understanding of…

Chemical Physics · Physics 2024-04-11 Nikolay V. Golubev , Jiří Vaníček

Heavy polar diatomic molecules are the leading candidates in searches for the permanent electric dipole moment of the electron (eEDM). Next-generation eEDM search experiments ideally require extremely large coherence times, in large…

Atomic Physics · Physics 2019-04-10 A. Sunaga , V. S. Prasannaa , A. C. Vutha , M. Abe , M. Hada , B. P. Das

We demonstrate that electron electric dipole moment experiments with molecules in paramagnetic state are sensitive to $P,T$-violating nuclear forces and other $CP$-violating parameters in the hadronic sector. These experiments, in…

High Energy Physics - Phenomenology · Physics 2021-01-04 V. V. Flambaum , I. B. Samsonov , H. B. Tran Tan

We show that the proposed measurements of the electric dipole moments of light nuclei in storage rings would put strong constraints on models of flavor-diagonal CP violation. Our analysis is exemplified by a comparison of the Standard Model…

High Energy Physics - Phenomenology · Physics 2014-07-22 W. Dekens , J. de Vries , J. Bsaisou , W. Bernreuther , C. Hanhart , Ulf-G. Meißner , A. Nogga , A. Wirzba

Searches for intrinsic electric dipole moments (EDMs) of nucleons, atoms and molecules are precision flavor-diagonal probes of new $CP$-odd physics, as motivated by the need to explain the matter-antimatter asymmetry in the universe. We…

High Energy Physics - Phenomenology · Physics 2026-03-19 Maxim Pospelov , Adam Ritz

Heavy polar molecules can be used to measure the electric dipole moment of the electron, which is a sensitive probe of physics beyond the Standard Model. The value is determined by measuring the precession of the molecule's spin in a plane…

Atomic Physics · Physics 2010-01-29 M. R. Tarbutt , J. J. Hudson , B. E. Sauer , E. A. Hinds

Detection of parity (P) and time-reversal (T) symmetry-odd electric dipole moments (EDMs) within currently achievable resolution would evidence physics beyond the Standard Model of particle physics. Via the CPT-theorem, which includes…

High Energy Physics - Phenomenology · Physics 2024-09-24 Konstantin Gaul , Robert Berger

CP violation from physics beyond the Standard Model may reside in triple boson vertices of the electroweak theory. We review the effective theory description and discuss how CP violating contributions to these vertices might be discerned by…

High Energy Physics - Phenomenology · Physics 2009-10-05 Sunghoon Jung , James D. Wells

Valuable information on interactions violating $P$- and $T$-invariance can be extracted from atomic experiments. The hypothesis of a large weak matrix element between single-particle states in heavy nuclei, $\sim 100$ eV, is ruled out by…

Nuclear Theory · Physics 2009-09-25 I. B. Khriplovich

Nuclear-spin-dependent (NSD) parity violating effects are studied for a number of diatomic molecules using relativistic Hartree-Fock and density functional theory and accounting for core polarization effects. Heavy diatomic molecules are…

Atomic Physics · Physics 2015-06-16 A. Borschevsky , M. M. Iliaš , V. A. Dzuba , V. V. Flambaum , P. Schwerdtfeger

Searches for violations of the fundamental symmetries of parity P and time reversal T in atomic and molecular systems provide a powerful tool for precise measurements of the physics of and beyond the standard model. In this work, we…

Atomic Physics · Physics 2024-12-12 Sebastian Lahs , Daniel Comparat

Precision measurements of time-reversal (T) symmetry violating moments probe physics beyond the Standard Model. We show that precision spectroscopy of paramagnetic lanthanide and actinide ions doped into noncentrosymmetric crystals offers a…

Atomic Physics · Physics 2026-03-27 Aleksandar Radak , Mingyu Fan , Bassam Nima , Yuiki Takahashi , Amar Vutha

We propose a method to measure time-reversal symmetry violation in molecules that overcomes the standard quantum limit while leveraging decoherence-free subspaces to mitigate sensitivity to classical noise. The protocol does not require an…

Atomic Physics · Physics 2024-01-25 Chi Zhang , Phelan Yu , Arian Jadbabaie , Nicholas R. Hutzler

Closed-shell atoms and molecules such as Hg or TlF provide some of the best low-energy tests of hadronic $\mathcal{CP}$-violation which is considered to be a necessary ingredient to explain the observed excess of matter over antimatter in…

A new theoretical approach to study the properties in solids, which are sensitive to a change of densities of the valence electrons in atomic cores (hyperfine structure constants, parameters of space parity (P) and time reversal (T)…

Chemical Physics · Physics 2013-08-02 L. V. Skripnikov , A. V. Titov

We study the impact of an environment on the electromagnetic responses of a molecule in the presence of a dielectric medium. By applying the dipole-dipole coupling between the molecule's and the environment's degrees of freedom, we can…

Quantum Physics · Physics 2022-11-04 Johannes Fiedler , Kristian Berland , Stefan Yoshi Buhmann

Time reversal invariance violating (TRIV) effects in neutron scattering are very important in a search for new physics, being complementary to neutron and atomic electric dipole moment measurements. In this relation, a sensitivity of TRIV…

Nuclear Theory · Physics 2015-05-30 Vladimir Gudkov , Young-Ho Song