Landau-Zener modelPopulation transferNonadiabatic effectMaster equationWe investigate a special time-dependent quantum model which assumes the Landau–Zener driving form but with an overall modulation of the intensity of the pulsing field. We demonstrate that the dynamics of the system, including the ...
Stochastic Landau-Zener model, and experimental estimates of dephasing time in molecular magnetsMolecular magnetsMuon spin rotation and relaxationQuantum tunneling of the magnetization in magnetic molecules (MM) with high spin value is a fascinating subject which contrasts clean and accurate experimental ...
We analyze the applicability of a simple two-level Landau–Zener model to describe the evolution of the probability amplitudes in this realistic system. We show that the Landau–Zener model works very well when it is viewed in the adiabatic basis, but it is not as robust in the diabatic ...
Keywords:quantumadiabatictransition;Landau-Zenertunneling;two-levelmodel;BEC 独创性声明 本人声明所呈交的学位论文是我个人在导师指导下进行的研究工作及取得的 研究成果。尽我所知,除文中已经标明引用的内容外,本论文不包含任何其他个人 或集体已经发表或撰写过的研究成果。对本文的研究做出贡献的个人和集体,均已 ...
A model of quantum dynamics of nonadiabatic transition in energy crossing two-level systems (Landau-Zener model) with fluctuation and dissipation mechanisms is formulated on the basis of the damping theory. The model is composed of a two-level system interacting with a single-mode boson system wh...
This paper presents analytic formulas for various transition times in the Landau-Zener model. Considerable differences are found between the transition times in the diabatic and adiabatic bases, and between the jump time (the time for which the transition probability rises to the region of its asymp...
We identify a nontrivial multistate Landau-Zener model for which transition probabilities between any pair of diabatic states can be determined analytically and exactly. In the semiclassical picture, this model features the possibility of interference of different trajectories that connect the same ...
忘忧草:Stochastic Dynamics (1): Caldeira-Leggett Model11 赞同 · 0 评论文章 忘忧草:Stochastic Dynamics (2): Feynman-Vernon Influence Functional Method6 赞同 · 3 评论文章发布于 2022-04-18 11:19 永远赢 赢麻了 永远赢麻 赞同352 条评论 分享喜欢收藏申请转载 ...
The Landau—Zener curve crossing model describing double charge transfer reactions accompanied by charge inversion has been modified to account for the possibility of the two electrons being captured into different orbitals of the projectile; the Taulbjerg factor is therefore computed in two steps. ...
We study the transitions between neighboring energy levels in a quasi-one-dimensional semiconductor quantum dot with two interacting electrons in it, when it is subject to a linearly time-dependent electric field. We analyze the applicability of a simple two-level Landau–Zener model to describe th...