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A2B模型的受迫振动模式研究 总被引:3,自引:3,他引:0
求解了三原子分子构架系统,即A2B动力学模型的受迫振动方程组,运用Maple程序分析了它的算例的振动图像,提出了A2B模型的受迫振动模式. 相似文献
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彭永刚 《原子与分子物理学报》2021,38(5):055001
三原子分别被束缚在用光纤环形连接单侧泄漏微光学腔场中,在微腔中输入激光驱动场和施加局域激光场,利用输入-输出技术及绝热近似理论,推导出一维Ising链模型的有效哈密顿量,该哈密顿量表明该系统会诱导出三原子中的任意两原子纠缠及三原子纠缠,用伴随数(concurrence)度量两原子纠缠,用内禀纠缠度量三原子纠缠,通过数值计算,给出两原子和三原子纠缠随时间演化曲线,通过适当调控激光驱动场和局域激光场,在远距离三原子中任意两原子实现未知量子态的隐形传送。 相似文献
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提出了一步变换三原子W态为三原子超单态的方案。在方案中,三个五能级原子同时与双模腔发生离散相互作用。方案的优点是可以有效抵御原子自发辐射和腔衰变引起的消相干的影响。 相似文献
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本文从三原子分子自由振动的力学模型出发,通过第二类拉格朗日方程,找出力电类比的参量,并建立电路方程,探求三原子分子自由振动的模拟电路. 相似文献
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《光学学报》2016,(12)
在腔量子电动力学模型中引入经典场驱动原子,通过设置原子-腔场的频率失谐量与经典场驱动强度的关系,实现有效Jaynes-Cummings模型到反Jaynes-Cummings模型的转化,从而达到控制系统动力学过程的目的。分别讨论了三原子Greenberger-Horne-Zeilinger(GHZ)型和W型纠缠态在不同原子-腔场有效相互作用模型下的纠缠动力学行为。结果发现,在经典场驱动下,三原子纠缠在动力学过程中可以实现从存在纠缠死亡现象到无纠缠死亡现象的转化,从而抑制纠缠突然死亡现象的发生。探究了泄漏腔情形下三原子GHZ型和W型纠缠态在演化过程中的纠缠稳健性,得到了三原子GHZ型和W型纠缠态在动力学过程中纠缠稳健性最强的有效原子-腔场相互作用模型。 相似文献
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In this paper, the problem of vibration transmission from slab track structures into bridge is studied by theoretical analysis. A vehicle-track-bridge coupling system dynamics model is established based on a multibody dynamics theory and a finite element method. The system model consists of vehicle model, track-bridge model and wheel/rail interaction model. The vehicle model is established based on the multibody dynamics theory, and the tack-bridge model is established by the finite element method. The vehicle model and track-bridge model are coupled through wheel/rail interaction model, and the track irregularities are included. The system dynamic responses are calculated, and the effectiveness of elastic materials in vibration reducing is discussed. The results demonstrate that elastic materials like slab mat layer inserted between slab track and bridge can reduce vibration transmitted from track into the bridge. Some suggestions for the design and application of slab mat are provided in the end of the paper. 相似文献
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Yu. V. Pyatkov V. V. Pashkevich W. H. Trzaska G. G. Adamian N. V. Antonenko D. V. Kamanin V. A. Maslov V. G. Tishchenko A. V. Unzhakova 《Physics of Atomic Nuclei》2004,67(9):1726-1730
An analysis of the preferable fission path manifesting itself as a fine structure of the total kinetic energy-mass distribution of the fission fragments compelled us to put forward an absolutely new shape of the fissioning system on the descent from the fission barrier. It is a multicomponent nuclear molecule constituted by two magic clusters and a torus-like neck between. 相似文献
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Bi系高温氧化物超导体CuO2面内Cu-O键伸缩振动的分析 总被引:2,自引:0,他引:2
测试了一系列Bi系高温氧化物超导体的红外吸收谱,分析了Bi系超导样品CuO2面内Cu-O键的伸缩振动与样品超电性的联系。结果表明,CuO2面内Cu-O伸缩振动吸收峰强度的变化与样品零电阻的变化一致,其原因与微观结构内部声子与载流子的相互作用密切相关。其次,根据分子振动理论,采用简化模型计算了Bi系超导体CuO2面内Cu-O振支频率 相似文献
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Karl-Robert Deibel Fabian KaiserRemo Zimmermann Linus MeierPeter Bolt Konrad Wegener 《Ultrasonics》2014
Ultrasonic vibration assisted cutting is a complex process with high dynamics. The interaction between cutting tool and workpiece is of key interest to understand the entire process. Experimental investigations are limited by the dynamics of the measurement system, and thus appropriately modeling of the ultrasonic vibration assisted cutting process is essential. In this investigation, a dynamic model regarding the ultrasonic vibration assisted guillotining of stacked paper sheets is developed. A Kelvin–Voigt material model, representing the individual sheets, is chosen, with its stiffness and damping parameters being empirically determined. A novel measurement strategy for studying the contact time and interaction between cutting tool and workpiece is introduced. It allows the verification of the highly dynamic behavior of the developed model. With the dynamic model, the experimentally observed cutting forces can be calculated. It is found that the dynamic forces cause a quicker failure of the material, which leads to a lower compression of the stack prior to reaching the critical cutting force. 相似文献
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Kinematics and Mechanical Properties Analyses on Vibration Converter of Intelligent Damper for Drill Strings 下载免费PDF全文
Taking vibration converter of intelligent damper for drill strings as the
study object, this paper analyzes the influential factors of motion state
of the ball and conducts an explicit dynamics simulation by establishing a
mechanics model of vibration converter. The study basis is Newton's laws of
motion, D'Alembert's principle and Hertz contact theory. And we use world
coordinate system, rotating coordinate system and Frenet coordinate system
to deduce kinematics equations of vibration converter. The ultimate result
demonstrates that the axial velocity and maximum contact stress change with
the increment of ball diameter and helix angle. It also proves the validity of
our derived kinematics and mechanical models and provides a good consultant
value for the design and theoretical arithmetic of vibration converter for
intelligent damper of drill strings. 相似文献
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Yusheng Dou Shuai Yuan Wenying Zhang Hong Tang Glenn V. Lo 《Molecular physics》2013,111(14):1517-1524
The nonradiative decay of a π-stacked adenine and thymine, following excitation of thymine by an ultrafast laser pulse, was studied by semiclassical dynamics simulations. The simulation found that a bonded exciplex is formed after excitation due to strong interaction between the stacked bases. The strong interaction significantly lowers the energy gap between the LUMO and HOMO and consequently facilitates the deactivation of the electronically excited molecule. It also restricts the deformation vibration of the excited thymine molecule, which slows down the coupling between the HOMO and LUMO energy levels and delays the deactivation of the excited adenine molecule to the electronic ground state. 相似文献