Results 11 to 20 of about 1,036,661 (329)
Deformed Oscillators with Two Double (Pairwise) Degeneracies of Energy Levels [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2007 A scheme is proposed which allows to obtain special $q$-oscillator models whose characteristic feature consists in possessing two differing pairs of degenerate energy levels.
Alexandre M. Gavrilik +1 more
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Application of quasi-degenerate perturbation theory to the calculation of rotational energy levels of methane vibrational polyads [PDF]
The Journal of Chemical Physics, 2015 In previous works, we have introduced an alternative perturbation scheme to find approximate solutions of the spectral problem for the rotation-vibration molecular Hamiltonian. An important feature of our approach is that the zero order Hamiltonian is the direct product of a purely vibrational Hamiltonian with the identity on the rotational degrees of ...
Patrick Cassam-Chenaı̈ +4 more
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Communications in Analysis and Mechanics, 2023 In this work, the initial-boundary value problem for the global dynamical properties of solutions to a class of finite degenerate fourth-order parabolic equations with mean curvature nonlinearity is studied.
Yuxuan Chen
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Discrete & Continuous Dynamical Systems - S, 2021 <p style='text-indent:20px;'>In this paper, we consider a class of finitely degenerate coupled parabolic systems. At high initial energy level <inline-formula><tex-math id="M1">\begin{document}$ J(u_{0})>d $\end{document}</tex-math></inline-formula>, we present a new sufficient condition to describe the global ...
Yuxuan Chen, Jiangbo Han
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Optics Express, 2023 Squeezed light near an atomic resonance is beneficial for efficient atom-light quantum interfaces. It is desirable but challenging to directly generate in atoms due to excess noise from spontaneous emission and reabsorption. Here, we report on the use of energy-level modulation to actively control atomic coherence and interference in degenerate four ...
Dan Wang +7 more
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Multiscale dynamics of open three-level quantum systems with two quasi-degenerate levels [PDF]
, 2015 We consider a three-level quantum system interacting with a bosonic thermal reservoir. Two energy levels of the system are nearly degenerate but well separated from the third one.
Berman, Gennady +2 more
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Journal of Mathematical Analysis and Applications, 2007 AbstractWe study the semi-classical trace formula at a critical energy level for a Schrödinger operator on Rn. We assume here that the potential has a totally degenerate critical point associated to a local minimum. The main result, which computes the contribution of this equilibrium, is valid for all time in a compact and establishes the existence of ...
Brice Camus
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Slow and fast light propagation through ladder-type atomic media with degenerate energy levels
Facta universitatis - series: Physics, Chemistry and Technology, 2019 We investigate the weak probe pulse propagation through the atomic medium, in the presence of the strong control laser field, under the regime of the electromagnetically induced transparency (EIT). These fields couple to the medium by forming the 3-level ladder configuration.
Nikola Filipović +2 more
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Heat rectification through single and coupled quantum dots
New Journal of Physics, 2022 We study heat rectification through quantum dots in the Coulomb blockade regime using a master equation approach. We consider both cases of two-terminal and four-terminal devices. In the two-terminal configuration, we analyze the case of a single quantum
Ludovico Tesser +5 more
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