Results 61 to 70 of about 17,102 (215)
The quantum double well anharmonic oscillator in an external field
, 2006 The aim of this paper is twofold. First of all, we study the behaviour of the lowest eigenvalues of the quantum anharmonic oscillator under influence of an external field.
Erik Van der Straeten +3 more
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Advanced Materials, Volume 38, Issue 7, 2 February 2026.A nonlinear optical microscopy technique is introduced that enables rapid imaging of hexagonal boron nitride monolayers, which are usually optically invisible. The nonlinear mixing of mid‐infrared and visible laser pulses enables full crystallographic imaging through phase‐resolved sum‐frequency generation microscopy, where the resonant excitation of a
Niclas S. Mueller +15 more
wiley +1 more source
, 2001 A new recursion procedure for deriving renormalized perturbation expansions for the one-dimensional anharmonic oscillator is offered. Based upon the $\hbar$-expansions and suitable quantization conditions, the recursion formulae obtained have the same ...
Dobrovolska, I. V., Tutik, R. S.
core +2 more sources
Solvent-Independent Anharmonicity for Carbonyl Oscillators [PDF]
The Journal of Physical Chemistry B, 2017 The physical origins of vibrational frequency shifts have been extensively studied in order to understand noncovalent intermolecular interactions in the condensed phase. In the case of carbonyls, vibrational solvatochromism, MD simulations, and vibrational Stark spectroscopy suggest that the frequency shifts observed in simple solvents arise ...
Samuel H. Schneider +3 more
openaire +2 more sources
Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation
Advanced Physics Research, Volume 5, Issue 2, February 2026.Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley +1 more source
Path Integral Methods in the Su-Schrieffer-Heeger Polaron Problem
, 2007 I propose a path integral description of the Su-Schrieffer-Heeger Hamiltonian, both in one and two dimensions, after mapping the real space model onto the time scale. While the lattice degrees of freedom are classical functions of time and are integrated
Zoli, Marco
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An explicit mapping between the frequency domain and the time domain representations of nonlinear systems [PDF]
, 2005 Explicit expressions are presented that describe the input-output behaviour of a nonlinear system in both the frequency and the time domain. The expressions are based on a set of coefficients that do not depend on the input to the system and are ...
Bassani +15 more
core +3 more sources
Quantum Theory of Surface Lattice Resonances
Nanophotonics, Volume 15, Issue 3, 12 February 2026.ABSTRACT The collective interactions of nanoparticles arranged in periodic structures give rise to high‐Q $Q$ in‐plane diffractive modes known as surface lattice resonances. Although these resonances and their broader implications have been extensively studied within the framework of classical electrodynamics and linear response theory, a quantum ...
Michael Reitz +4 more
wiley +1 more source
AIP Advances, 2016 Energy-level densities are key for obtaining various chemical properties. In chemical kinetics, energy-level densities are used to predict thermochemistry and microscopic reaction rates. Here, an analytic energy-level density formulation is derived using
M. Döntgen
doaj +1 more source
Solution to the Equations of the Moment Expansions [PDF]
, 2011 We develop a formula for matching a Taylor series about the origin and an asymptotic exponential expansion for large values of the coordinate. We test it on the expansion of the generating functions for the moments and connected moments of the ...
C. Stubbins +10 more
core +4 more sources