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We observe mixing between two-electron singlet and triplet states in a double quantum dot, caused by interactions with nuclear spins in the host semiconductor. This mixing is suppressed by applying a small magnetic field, or by increasing…

Among the possible types of magnetic dipole interactions in molecular systems, couplings between nuclear motion and the nuclear spin have probably received the least attention in molecular spectroscopy. Although very small in comparison to…

化学物理 · 物理学 2026-04-22 Matthias Diez , Johannes K. Krondorfer , Albert Hirtenfelder , Andreas W. Hauser

Calculations of the magnetic hyperfine structure rely on the input of nuclear properties -- nuclear magnetic moments and nuclear magnetization distributions -- as well as quantum electrodynamic (QED) radiative corrections for high-accuracy…

原子物理 · 物理学 2018-09-19 J. S. M. Ginges , A. V. Volotka

Measurement of the neutral weak vector form factors of the nucleon provides unique access to the strange quark content of the nucleon. These form factors can be studied using parity-violating electron scattering. A comprehensive program of…

核实验 · 物理学 2012-10-29 D. S. Armstrong , R. D. McKeown

There are numerous recent and ongoing experiments employing a variety of atomic species to search for couplings of atomic spins to exotic fields. In order to meaningfully compare these experimental results, the coupling of the exotic field…

原子物理 · 物理学 2015-08-06 D. F. Jackson Kimball

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…

原子物理 · 物理学 2010-01-29 M. R. Tarbutt , J. J. Hudson , B. E. Sauer , E. A. Hinds

We demonstrate theoretically the existence of a linear dc Stark shift of the individual substates of an alkali atom in its ground state, dressed by a circularly polarized laser field. It arises from the electroweak nuclear anapole moment…

原子物理 · 物理学 2008-11-26 Marie-Anne Bouchiat

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…

核理论 · 物理学 2009-09-25 I. B. Khriplovich

Nuclear anapole moments are parity-odd, time-reversal-even E1 moments of the electromagnetic current operator. Although the existence of this moment was recognized theoretically soon after the discovery of parity nonconservation (PNC), its…

核理论 · 物理学 2014-11-18 W. C. Haxton , C. P. Liu , M. J. Ramsey-Musolf

We devise an approach to measure the polarization of nuclear spins via conductance measurements. Specifically, we study the combined effect of external magnetic field, nuclear spin polarization, and Rashba spin-orbit interaction on the…

介观与纳米尺度物理 · 物理学 2010-10-12 James A. Nesteroff , Yuriy V. Pershin , Vladimir Privman

We consider bound states of fermions with an anomalous magnetic moments(neutrinos,neutrons) in radial electric and magnetic field of monopole.In case of radial magnetic field the interaction $\vec{\Sigma}\vec{H}$ violates P-parity and for…

高能物理 - 唯象学 · 物理学 2007-05-23 R. A. Alanakyan

Studies of the effects of the weak interaction in atomic systems provide tests of the Standard Model of particle physics, and explore physics scenarios beyond the Standard Model. In addition, these studies can offer valuable insights into…

原子物理 · 物理学 2024-11-21 Stefanos Nanos , Iraklis Papigkiotis , Dionysios Antypas

Due to a directional asymmetry of neutrino emission caused by parity violation, a sample of radioactive atoms experiences a small recoil force from neutrino radiation accompanying electron capture by polarized nuclei. An expression for this…

核理论 · 物理学 2019-04-24 A. L. Barabanov , O. A. Titov

High precision measurements of the parity-violating asymmetry in polarized electron scattering from nuclei can be used to extract information on nuclear and nucleon structure or to determine Standard Model couplings and higher-order…

核理论 · 物理学 2015-04-15 O. Moreno , T. W. Donnelly

The violation of isospin symmetry in nucleus-nucleus reactions, as shown in the ratio ${R_K=(K^++K^-)/(K^0+\bar{K}^0)}$ presented by NA61/SHINE, can be understood by introducing results from color-string fragmentation in $e^+e^-$ to nuclear…

核理论 · 物理学 2025-03-14 Tom Reichert , Jan Steinheimer , Marcus Bleicher

In order to make precision measurements of neutrino oscillations using few-GeV neutrino beams a detailed understanding of nuclear effects in neutrino scattering is essential. Recent studies have revealed that single-transverse kinematic…

高能物理 - 实验 · 物理学 2019-08-14 Stephen Dolan , Xianguo Lu , Luke Pickering , Tomislav Vladisavljevic , Alfons Weber

A magnetometer using spin-polarized K and $^3$He atoms occupying the same volume is used to search for anomalous nuclear spin-dependent forces generated by a separate $^3$He spin source. We measure changes in the $^3$He spin precession…

原子物理 · 物理学 2010-01-11 G. Vasilakis , J. M. Brown , T. W. Kornack , M. V. Romalis

There are several factors which lead to a huge enhancement of parity and time invariance violating effects in the Ra atom: very close electronic levels of opposite parity, the large nuclear charge Z and the collective nature of T,P-odd…

原子物理 · 物理学 2009-10-31 V. V. Flambaum

Spin-transfer and spin-orbit torques allow controlling magnetic degrees of freedom in various materials and devices. However, while the transfer of angular momenta between electrons has been widely studied, the contribution of nuclear spins…

介观与纳米尺度物理 · 物理学 2023-10-16 Adam B. Cahaya , Alejandro O. Leon , Mohammad H. Fauzi

We use configuration interaction technique to calculate parity non-conservation (PNC) in metastable Xe and Hg [proposal of the experiment in L. Bougas et al, Phys. Rev. Lett. 108, 210801 (2012)]. Both, nuclear spin-independent and nuclear…

原子物理 · 物理学 2015-06-11 V. A. Dzuba , V. V. Flambaum