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原子与平板间的Casimir-Polder力的基础研究

The Basic Study of the Casimir-Polder Force between an Atom and a Plane

【作者】 沈晓霞

【导师】 王兆英;

【作者基本信息】 浙江大学 , 光学, 2013, 硕士

【摘要】 近年来,随着原子力显微镜等方面的应用越来越广泛,人们逐渐对van der Walls力和Casimir力的研究投以了极大兴趣。结合国内外的研究状况,本文在已有的Casimir效应和Casimir-Polder效应研究基础上,设计了一个有关Casimir-Polder力的计算模型,给出了其具体计算公式,并结合相关计算软件进行了数据模拟和理论分析。第一章:阐述Casimir-Polder效应研究的背景与意义。首先简要介绍了Casimir效应研究的发展过程,阐述了Casimir力的测量及发展状况。同时,还分析了本论文的主要目标及创新性工作。第二章:主要阐述了Casimir效应的原理,给出了其物理机理;在此基础上,总结了几种典型的Casimir力的模型,并分别得到了其计算公式。另外,结合现在国内外的研究状况,论文分析和讨论了Casimir排斥力的实现可能性,并通过具体实例介绍其实现条件和方法。第三章:主要阐述了Casimir-Polder效应及其最新的研究情况,包括研究的模型、测量的方法等。随后给出了一个具体测量Casimir-Polder力的模型及其计算公式。第四章:结合国内外现有的计算Casimir-Polder力的研究模型及方法,论文设计了一套新的模型来计算原子与平板间的Casimir-Polder力,并简要分析和研究了一些影响Casimir-Polder力的因素。该模型结合偶极—偶极相互作用,利用原子在偶极辐射场的作用下发生了能级移动,导致原子受到了平板给它的作用力。第五章:对目前的工作进行了总结和展望。主要根据论文的理论计算模型及结果进行分析和总结,并根据现有的理论分析,对以后的研究提出了自己的意见和建议。

【Abstract】 Recently, the application of atomic force microscope becomes more and more widely, which leads to the increase of interests in studying the van der Walls force and Casimir force by many researchers. Based on the research works on the study of Casimir effect and Casimir-Polder effect at home and abroad, I presented a theoretical model to calculate the Casimir-Polder force. Furthermore, a data simulation and theoretical analysis was also offered through some relevant calculation software.In the first chapter, the background and significance of this study is described. Firstly, the paper briefly introduced the developing process of Casimir force and its effect, as well as some measurement and application situations. The main target and innovation of this thesis is also pointed out.In the second chapter, the principle of the Casimir effect and its physical mechanism were given. Then several typical models are summarized, and the calculation formulas are obtained. In addition, according to the situation of domestic and foreign researches, we analysed and discussed the possibility of the repulsive Casimir force, introduced the realization conditions and methods through some specific examples.In the third chapter, the Casimir-Polder force is introduced. Some latest research results were given, including the research models, measuring methods and so on. Then a concrete model to calculate the Casimir-Polder force and its calculation formula is provided.Based on the existing models and calculation methods about the Casimir-Polder force, a new model of the Casimir-Polder force between an atom and a plane was given in the fourth chapter. Moreover, the factors influencing the Casimir-Polder force is briefly analyzed. On the basis of the dipole-dipole interaction, this model used the atomic energy shift in the dipole radiation field, resulted in that the atom got a force from the plane.In the fifth chapter, a summary and prospect of the present work was carried out. According to the theoretical calculation model and the results that had achieved, some opinions and suggestions about future study are put forward.

  • 【网络出版投稿人】 浙江大学
  • 【网络出版年期】2014年 04期
  • 【分类号】O431.2
  • 【被引频次】2
  • 【下载频次】198
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