Results 41 to 50 of about 260,950 (169)

Coherent Optical Creation of a Single Molecule

Physical Review X, 2021
We report coherent association of atoms into a single weakly bound NaCs molecule in an optical tweezer through an optical Raman transition. The Raman technique uses a deeply bound electronic excited intermediate state to achieve a large transition dipole
Yichao Yu, Kenneth Wang, Jonathan D. Hood, Lewis R. B. Picard, Jessie T. Zhang, William B. Cairncross, Jeremy M. Hutson, Rosario Gonzalez-Ferez, Till Rosenband, Kang-Kuen Ni   +9 more
doaj   +1 more source

Breakdown of the few-level approximation in collective systems [PDF]

Phys. Rev. A 76, 013807 (2007), 2006
The validity of the few-level approximation in dipole-dipole interacting collective systems is discussed. As example system, we study the archetype case of two dipole-dipole interacting atoms, each modelled by two complete sets of angular momentum multiplets.
arxiv   +1 more source

Quantum Size-Driven Spectral Variations in Pillar[n]arene Systems: A Density Functional Theory and Wave Function Assessment

Molecules
This study explores the quantum size effects on the optical properties of pillar[n]arene (n = 5, 6, 7, 8) utilizing density functional theory (DFT) and wave function analysis.
Cailian Yao, Tao Wang
doaj   +1 more source

Time resolved femtosecond spectroscopy of nanocomposites

EPJ Web of Conferences, 2018
Characterization methods of nanocomposites consisted of semiconductor metal-oxide quantum dots (QD) incorporated into a dielectric matrix have been elaborated on the base of time resolved four-wave mixing and photon echo.
Khasanov Oleg, Smirnova Tatiana, Fedotova Olga, Rusetsky Grigory, Gayvoronsky Vladimir, Pokutnyi Sergey   +5 more
doaj   +1 more source

Visualizations of electric and magnetic interactions in ECD and ROA [PDF]

arXiv, 2019
The chiral source and its mechanism in the molecular system are of great significance in many fields. In this work, we proposed visualized methods to investigate physical mechanism of chiral molecule, where the electric and magnetic interactions are visualized with the transitional electric dipole moment, the transitional magnetic dipole moment and the
arxiv  

Hierarchical dielectric orders in layered ferroelectrics Bi2SiO5

IUCrJ, 2014
Electric dipole engineering is now an emerging technology for high electron-mobility transistors, ferroelectric random access memory and multiferroic devices etc.
Younghun Kim, Jungeun Kim, Akihiko Fujiwara, Hiroki Taniguchi, Sungwng Kim, Hiroshi Tanaka, Kunihisa Sugimoto, Kenichi Kato, Mitsuru Itoh, Hideo Hosono, Masaki Takata   +10 more
doaj   +1 more source

Nonadiabatic Calculation of Dipole Moments [PDF]

arXiv, 2009
We review some of the few available nonadiabatic calculations of dipole moments. We show that those carried out in a laboratory-fixed set of coordinate axes are bound to fail and discuss the more reasonable ones in a molecule-fixed reference frame. For completeness we also describe the standard Born--Oppenheimer calculations of dipole moments.
arxiv  

Gravitational wave and electroweak baryogenesis with two Higgs doublet models

Physics Letters B, 2022
We study stochastic gravitational wave production and baryon number generation at electroweak phase transition with the two Higgs doublet models. The produced stochastic gravitational wave during the strongly first-order phase transition can be probed by
Ruiyu Zhou, Ligong Bian
doaj  

Constraining active-sterile neutrino transition magnetic moments at DUNE near and far detectors

Journal of High Energy Physics, 2021
We consider the sensitivity of the DUNE experiment to a heavy neutral lepton, HNL (also known as sterile neutrino) in the mass range from a few MeV to a few GeV, interacting with the Standard Model via a transition magnetic moment to the active neutrinos,
Thomas Schwetz, Albert Zhou, Jing-Yu Zhu
doaj   +1 more source

Ab initio Calculation of Dipole Moments and Transition Dipole Moments of HCl+ and HBr+ Molecular Ions [PDF]

arXiv, 2014
Electronic structure of HCl+ and HBr+ molecular ions is calculated using the symmetry-adapted-cluster configuration interaction (SAC-CI) method. In this paper, we analyse dipole moments (DM) for a series of low-lying six 2Pi-states and transition dipole moments (TDM for transitions from the ground state X2Pi to the excited 2Pi-series.
arxiv