Results 21 to 30 of about 346,351 (271)

Soliton ratchets induced by ac forces with harmonic mixing [PDF]

open access: yes, 2001
The ratchet dynamics of a kink (topological soliton) of a dissipative sine-Gordon equation in the presence of ac forces with harmonic mixing (at least bi-harmonic) of zero mean is studied.
A.K. Vidybida   +38 more
core   +2 more sources

On-the-fly ab initio semiclassical evaluation of absorption spectra of polyatomic molecules beyond the Condon approximation [PDF]

open access: yes, 2018
To evaluate vibronic spectra beyond the Condon approximation, we extend the on-the-fly ab initio thawed Gaussian approximation by considering the Herzberg-Teller contribution due to the dependence of the electronic transition dipole moment on nuclear ...
Begušić, Tomislav   +2 more
core   +2 more sources

Shannon-Wehrl entropy for cosmological and black hole squeezing [PDF]

open access: yes, 1994
We discuss the Shannon-Wehrl entropy within the squeezing vocabulary for the cosmological and black hole particle production.Comment: 4 pages, 2 Figures available from the author(s), LaTex, IFUG-11/94 r, contribution to Harmonic Oscillators 2, Cocoyoc,
Reyes, Marco, Rosu, Haret
core   +3 more sources

Surface Enhanced Second Harmonic Generation from Macrocycle, Catenane, and Rotaxane Thin Films: Experiments and Theory [PDF]

open access: yes, 2006
Surface enhanced second harmonic generation (SE SHG) experiments on molecular structures, macrocycles, catenanes, and rotaxanes, deposited as monolayers and multilayers by vacuum sublimation on silver, are reported.
Allinger N. L.   +29 more
core   +1 more source

Ultra-high phase-locked harmonic generation from magnetic transversal confinement of electrons [PDF]

open access: yesEPJ Web of Conferences, 2023
The technological refinements on high-power laser systems of Petawatt class unveil scenarios for light-matter interaction beyond the laser-plasma perspective.
Plaja Luis   +4 more
doaj   +1 more source

The current-phase relation in Josephson tunnel junctions [PDF]

open access: yes, 2005
The $J(\phi)$ relation in SFIFS, SNINS and SIS tunnel junctions is studied. The method for analytical solution of linearized Usadel equations has been developed and applied to these structures.
A. A. Golubov   +13 more
core   +4 more sources

Molecular Orientation-Induced Second-Harmonic Generation: Deciphering Different Contributions Apart

open access: yesThe Journal of Physical Chemistry A, 2022
We demonstrate and explore an all-optical technique for direct monitoring the orientation dynamics of gas phase molecular ensembles. The technique termed 'MOISH' utilizes the transiently lifted inversion symmetry of polar gas media and provides a sensitive and spatially localized probing of second harmonic generation signal that is directly correlated ...
Amit Beer   +3 more
openaire   +3 more sources

Role of harmonics and subharmonics in peripheral pulse analysis

open access: yesMGM Journal of Medical Sciences, 2020
Elastic compliance of the blood vessels contributes high-frequency components in the peripheral pulse, which are analyzed with the help of the power spectral density of the signal.
G D Jindal   +3 more
doaj   +1 more source

Two-particle interferometry for non-central heavy-ion collisions [PDF]

open access: yes, 1997
In non-central heavy ion collisions, identical two particle Hanbury-Brown/Twiss (HBT) correlations C(K,q) depend on the azimuthal direction of the pair momentum K.
E. Schnedermann   +27 more
core   +2 more sources

Orbital perspective on high-harmonic generation from solids

open access: yesNature Communications, 2023
High-harmonic generation in solids allows probing and controlling electron dynamics in crystals on few femtosecond timescales, paving the way to lightwave electronics.
Álvaro Jiménez-Galán   +9 more
doaj   +1 more source

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