Results 51 to 60 of about 504,986 (312)

PT-symmetric quantum oscillator in an optical cavity [PDF]

open access: yes, 2016
The quantum harmonic oscillator with parity-time ($\mathcal{PT}$) symmetry, obtained from the ordinary (Hermitian) quantum harmonic oscillator by an imaginary displacement of the spatial coordinate, provides an important and exactly-solvable model to investigate non-Hermitian extension of the Ehrenfest theorem.
arxiv   +1 more source

Anti-PT-symmetric harmonic oscillator and its relation to the inverted harmonic oscillator [PDF]

open access: yesarXiv, 2022
We treat the quantum dynamics of a harmonic oscillator as well as its inverted counterpart in the Schr\"odinger picture. Generally in the most papers of the literature, the inverted harmonic oscillator is formally obtained from the harmonic oscillator by the replacement of {\omega} to i{\omega}, this leads to unbounded eigenvectors.
arxiv  

Quantum harmonic oscillator for dipoles

open access: green, 2012
This paper has been withdrawn by the authors due to a crucial approximation error in the first order approximation of the equation (4)
Cleverson Filgueiras   +2 more
openalex   +4 more sources

Multi‐Pathway Upconversion Emission in Symmetry‐Broken Nanocavities: Broadband Multiresonant Enhancement and Anti‐Correlated Interfacial Sensitivity

open access: yesAdvanced 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

Computational Modeling of Reticular Materials: The Past, the Present, and the Future

open access: yesAdvanced Materials, EarlyView.
Reticular materials are advanced materials with applications in emerging technologies. A thorough understanding of material properties at operating conditions is critical to accelerate the deployment at an industrial scale. Herein, the status of computational modeling of reticular materials is reviewed, supplemented with topical examples highlighting ...
Wim Temmerman   +3 more
wiley   +1 more source

A Categorical Framework for the Quantum Harmonic Oscillator [PDF]

open access: yesInternational Journal of Theoretical Physics, 2008
44 pages, many ...
openaire   +4 more sources

Controllability of Quantum Harmonic Oscillators [PDF]

open access: yesIEEE Transactions on Automatic Control, 2004
It is proven in a previous paper that any modal approximation of the one-dimensional quantum harmonic oscillator is controllable. We prove here that, contrary to such finite-dimensional approximations, the original infinite-dimensional system is not controllable: Its controllable part is of dimension 2 and corresponds to the dynamics of the average ...
Pierre Rouchon, Mazyar Mirrahimi
openaire   +2 more sources

Quantum Batteries: A Materials Science Perspective

open access: yesAdvanced Materials, EarlyView.
This perspective is focused on advanced materials that might allow the new device class of quantum batteries to be developed. These systems include microcavities with organic molecules, inorganic nanostructures and perovskites, and superconductor circuits.
Andrea Camposeo   +5 more
wiley   +1 more source

Brown fat detection by infrared thermography—An invaluable research methodology with noteworthy uncertainties confirmed by a mathematical proof

open access: yesEndocrinology, Diabetes &Metabolism, Volume 6, Issue 1, January 2023., 2023
Infrared detection by thermal camera obeys Stefan's law of radiative heat transfer. This associated uncertainty in detection is estimated by the formula of propagation of error. Abstract Brown adipose tissue (BAT) represents a pivotal scientific renaissance worthy as a strategy for obesity and diabetes since its re‐discovery in adults over a decade ago.
Melvin K. S. Leow
wiley   +1 more source

Coupled harmonic oscillators and their quantum entanglement [PDF]

open access: yesPhysical Review E, 2018
A system of two coupled quantum harmonic oscillators with the Hamiltonian ${\hat H}=\frac{1}{2}\left(\frac{1}{m_1}{\hat p}^{2}_1 + \frac{1}{m_2}{\hat p}^{2}_2+A x^2_1+B x^2_2+ C x_1 x_2\right)$ can be found in many applications of quantum and nonlinear physics, molecular chemistry, and biophysics. The stationary wave function of such a system is known,
openaire   +3 more sources

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