Results 61 to 70 of about 839,047 (377)
, 2003 Irreversibility is introduced to quantum graphs by coupling the graphs to a bath of harmonic oscillators. The interaction which is linear in the harmonic oscillator amplitudes is localized at the vertices.
Breit G +16 more
core +1 more source
Approximate Solution of Schrödinger Equation with Pseudo-Gaussian Potential Viewed as a Perturbation
Annals of West University of Timisoara: Physics, 2015 We consider the Schrödinger equation with pseudo-Gaussian potential and point out that it is basically made up by a term representing the harmonic oscillator potential and an additional term, which is actually a power series that converges rapidly. Based
Iacob Theodor-Felix +2 more
doaj +1 more source
Harmonic oscillator in a background magnetic field in noncommutative quantum phase-space
, 2009 We solve explicitly the two-dimensional harmonic oscillator and the harmonic oscillator in a background magnetic field in noncommutative phase-space without making use of any type of representation.
Duval C. +9 more
core +1 more source
Advanced Functional Materials, EarlyView.Off‐centering of cations in pavonite‐structured Ag1.75InSb5.75Se11 (AISS) breaks crystal symmetry, inducing Rashba‐like band splitting and high band degeneracy, thus enhancing Seebeck coefficients. Soft bonds between off‐centered cations and Se atoms increase phonon scattering, achieving low lattice thermal conductivity (0.22 W m−1K−1 at 723 K). Doping
Chenghao Xie +7 more
wiley +1 more source
Quantum quench in non-relativistic fermionic field theory: harmonic traps and 2d string theory
Journal of High Energy Physics, 2019 We investigate a class of exactly solvable quantum quench protocols with a finite quench rate in systems of one dimensional non-relativistic fermions in external harmonic oscillator or inverted harmonic oscillator potentials, with time dependent masses ...
Sumit R. Das, Shaun Hampton, Sinong Liu
doaj +1 more source
Qubit-assisted thermometry of a quantum harmonic oscillator [PDF]
, 2012 We use the theory of quantum estimation in two different qubit-boson coupling models to demonstrate that the temperature of a quantum harmonic oscillator can be estimated with high precision by quantum-limited measurements on the qubit.
M. Brunelli +3 more
semanticscholar +1 more source
Near‐Field Phonon Nanoscopy and Imaging of Structural Variants in Mixed Phase BiFeO3
Advanced Functional Materials, EarlyView.Nano‐Fourier transform infrared spectroscopy and scattering scanning near‐field optical microscopy imaging reveal the phonon response of nanoscale phase variants in mixed‐phase BiFeO3 (BFO). Direct mid‐infrared imaging of associated distinct vibrational signatures is used as a non‐invasive optical detection method for electrical switching of ...
Dawei Zhang +8 more
wiley +1 more source
Discrete time model of self-oscillations with spectral line widening
Физика волновых процессов и радиотехнические системы, 2022 An algorithm for generating quasi-harmonic self-oscillations with a uniformly widened spectral line is presented. The algorithm is based on the equation of motion of the Thomson-type DT-oscillator, which introduced a random effect in the form of band ...
Valery V. Zaitsev +2 more
doaj +1 more source
Convergence properties of ab initio calculations of light nuclei in a harmonic oscillator basis [PDF]
, 2012 We study recently proposed ultraviolet and infrared momentum regulators of the model spaces formed by construction of a variational trial wavefunction which uses a complete set of many-body basis states based upon three-dimensional harmonic oscillator ...
S. Coon +5 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.Symmetry‐broken plasmonic nanoantenna arrays achieve broadband multiresonant enhancement of second harmonic generation (SHG), third harmonic generation (THG), and upconversion photoluminescence (UCPL), under femtosecond laser excitation across the near‐infrared range (1000–1600 nm).
Elieser Mejia +9 more
wiley +1 more source