Ultrafast dynamic evolution of multilevel systems in medium-strength laser fields
New Journal of Physics, 2019 The ultrafast dynamic evolution of an atomic system under medium-strength laser fields is studied by performing transient absorption measurement. An analytical model developed from perturbation theory with a modified transition dipole moment is presented
Zhenhao Wang +7 more
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Intersubband Optical Nonlinearity of GeSn Quantum Dots under Vertical Electric Field
Micromachines, 2019 The impact of vertical electrical field on the electron related linear and 3rd order nonlinear optical properties are evaluated numerically for pyramidal GeSn quantum dots with different sizes.
Mourad Baira +3 more
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Rare CP-violated η and η′ meson decays and neutron EDM.
EPJ Web of Conferences, 2018 The data for the upper limit on the electric dipole moment of the neutron (nEDM) can be explained by using different mechanisms beyond the Standard Model (SM). The nEDM can be generated by a CP-violating transition of η and η′ mesons into pion pairs.
Zhevlakov Alexey S. +3 more
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Electric toroidal dipole order and hidden spin polarization in ferroaxial materials [PDF]
arXivWe investigate the role of electric toroidal dipoles in the prototypical ferroaxial materials NiTiO$_3$ and K$_2$Zr(PO$_4$)$_2$, which undergo ferroaxial structural phase transitions of order-disorder and displacive type, respectively. Using first-principles electronic structure theory, we compute the evolution across the ferroaxial transitions of the ...
arxiv
Oscillating nuclear electric dipole moments inside atoms [PDF]
arXiv, 2019 Interaction with the axion dark matter (DM) field generates an oscillating nuclear electric dipole moment (EDM) with a frequency corresponding to the axion's Compton frequency. Within an atom, an oscillating EDM can drive electric dipole transitions in the electronic shell.
arxiv
The A2Π–X2Σ+ Band System of YO
The Astrophysical JournalYO bands are conspicuous in the spectra of S stars. The laboratory spectrum of the A ^2 Π–X ^2 Σ ^+ electronic transition has been recorded with a Fourier transform spectrometer using a composite-wall hollow cathode lamp source.
Peter F Bernath +2 more
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Hot spin spots in the laser-induced demagnetization
AIP Advances, 2012 Laser-induced femtosecond magnetism or femtomagnetism simultaneously relies on two distinctive contributions: (a) the optical dipole interaction (ODI) between a laser field and a magnetic system and (b) the spin expectation value change (SEC) between two
M. S. Si, G. P. Zhang
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Preparation, Microwave Transitions and Dipole Moment of trans-1-Fluoro-1,3-butadiene. [PDF]
, 1980 Per Cederbalk +6 more
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The potential energy function for O2 X(3∑−g ) and the transition dipole moment of the Schumann–Runge band near X-state dissociation [PDF]
, 1989 Xueming Yang, Alec M. Wodtke
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Infrared vibrational spectra of CH3+ and its deuterated isotopologues
AIP Advances, 2019 We report a theoretical study of the infrared (IR) vibrational spectra of CH3+ and its deuterated isotopologues. We also report exothermicities for reactions of these species with HD and D2.
Gunnar Nyman, Hua-Gen Yu
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