Results 111 to 120 of about 96,212 (277)

Quantum Harmonic Oscillator Sonification [PDF]

open access: yes, 2010
This work deals with the sonification of a quantum mechanical system and the processes that occur as a result of its quantum mechanical nature and interactions with other systems. The quantum harmonic oscillator is not only regarded as a system with sonifiable characteristics but also as a storage medium for quantum information.
Gerhard Eckel   +2 more
openaire   +2 more sources

Linear and Two‐Dimensional Infrared Spectroscopy of the Multifunctional Vibrational Probe, 3‐(4‐Azidophenyl) Propiolonitrile. Deperturbing a Fermi Triad by Isotopic Substitution

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Linear infrared spectroscopy combined with isotope labeling and density functional theory unravels the origin of a Fermi triad in a multifunctional vibrational chromophore. Ultrafast 2DIR‐spectroscopy reports directly on the dynamics and the intramolecular vibrational energy flow pathways in the isotopically deperturbed system. Abstract Infrared probes
Claudia Gräve   +4 more
wiley   +1 more source

H-Theorem in an Isolated Quantum Harmonic Oscillator. [PDF]

open access: yesEntropy (Basel), 2022
Hsueh CH, Cheng CH, Horng TL, Wu WC.
europepmc   +1 more source

On relativistic harmonic oscillator

open access: yes, 2017
A relativistic quantum harmonic oscillator in 3+1 dimensions is derived from a quaternionic non-relativistic quantum harmonic oscillator. This quaternionic equation also yields the Klein-Gordon wave equation with a covariant (space-time dependent) mass ...
Arbab, A. I.
core  

Anisotropy Factor Spectra for Weakly Allowed Electronic Transitions in Chiral Ketones

open access: yesChemPhysChem, Volume 26, Issue 6, March 15, 2025.
Anisotropy factor spectra for the weak n→π*‐type A‐band of chiral ketones cannot be described within the Franck–Condon approximation. Thus, we present such spectra computed by accounting for Herzberg–Teller corrections and compare them to experiments for fenchone, camphor and 3MCP to describe chiroptical properties of these molecules in the mid to near
Leon A. Kerber   +5 more
wiley   +1 more source

Scattering of NO Molecules from a Graphite Surface: Selectivity of the Rotational Excitation by Inelastic Collisions

open access: yesChemPhysChem, EarlyView.
Selectivity and propensity have been emphasized for NO molecules scattered from a graphite surface, employing molecular dynamics simulation alongside a new potential energy surface, including an appropriate treatment of the long‐range interaction, governing the formation of the precursor state, that then reacts with the surface.
Maria Rutigliano, Fernando Pirani
wiley   +1 more source

AI‐Enhanced High‐Resolution Functional Imaging Reveals Trap States and Charge Carrier Recombination Pathways in Perovskite

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
We use AI‐enhanced intensity modulation two‐photon excited fluorescence microscopy (ml‐IM2PM) to investigate defect properties and charge carrier recombination in MAPbBr3 films. Mapping exciton generation rate, trap concentration, and trap energy barriers and correlating spatially resolved charge carrier recombination pathways, we identify the ...
Qi Shi, Tönu Pullerits
wiley   +1 more source

Coherent Terahertz Hyper‐Raman Spectroscopy

open access: yesJournal of Raman Spectroscopy, EarlyView.
In this paper, we review our recent discovery of a novel nonlinear effect in the terahertz frequency range, which we have termed terahertz hyper‐Raman (THYR) spectroscopy. This technique shares many characteristics with conventional hyper‐Raman spectroscopy but is applied within the THz spectrum.
Domenico Paparo   +2 more
wiley   +1 more source

The quartic anharmonic oscillator - an oscillator-basis expansion approach. I. Energy levels study and calculation [PDF]

open access: yesЯдерна фізика та енергетика
For the quantum quartic anharmonic oscillator with the Hamiltonian H=0.5(p2+x2)+λx4 which is one of the classic traditional quantum-mechanical and quantum-field-theory models, its main physical characteristics and properties are thoroughly studied and ...
V. A. Babenko, A. V. Nesterov
doaj   +1 more source

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