大学物理 ›› 2017, Vol. 36 ›› Issue (12): 28-33.doi: 10.16854/j.cnki.1000-0712.2017.12.008

• 教学讨论 • 上一篇    下一篇

Airy波包及其自加速效应

孔红艳   

  1. 陕西师范大学物理学与信息技术学院,陕西西安 710119
  • 收稿日期:2017-01-09 修回日期:2017-04-17 出版日期:2017-12-20 发布日期:2017-12-20
  • 作者简介:孔红艳(1974—)女,陕西宝鸡人,陕西师范大学副教授,博士,主要从事热学、热力学统计物理、大学物理
  • 基金资助:
    陕西师范大学科研启动项目(1110010628)资助

Airy wave packet and the auto acceleration effect

KONG Hong-Yan   

  • Received:2017-01-09 Revised:2017-04-17 Online:2017-12-20 Published:2017-12-20

摘要: 结合Airy(艾里)函数对线性势场中微观粒子的运动规律进行了研究.在此基础上,结合边界条件、归一化关系求解 了线性势场和V型势场内粒子的波函数和能级结构.根据相对速度伽利略变换,研究了含时薛定谔方程的解———可积分的波 包在自由空间的动力学行为,求解出自由空间艾里波包的运动规律和量子力学中艾里波包的唯一性.

关键词: 艾里函数, 薛定谔方程, 波函数, 艾里波包, 艾里光束

Abstract: Combined with the Airy function and its basis properties, this article studies the microscopic motion of a wave packet of a particle in a linear potential field. The Schr?dinger equation for the linear potential and the V potential are solved to give the wave functions and the energy level structure of the particle. Then, in a free space, the free motion of Airy package is investigated in detail. The calculation reveals that a free Airy wave packet shows a self-acceleration in the free space. Finally, some experiments to show the strange evolution of Airy wave packet are demonstrated.

Key words: Airy function, Fourier transformation, Schrodinger equation, wave function, Airy beam