College Physics ›› 2023, Vol. 42 ›› Issue (4): 13-.doi: 10.16854/j.cnki.1000-0712. 220257

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Schrödinger equation introduced by using Noether,s  theorem and Taylor,s expansion

YANG Xiao-ning,WANG Feng,LI Jun-gang   

  1. College of Physics,Beijing Institute of Technology,Beijing 100081,China 
  • Received:2022-05-17 Revised:2022-09-02 Online:2023-05-04 Published:2023-05-08

Abstract: In quantum mechanics, Schrödinger equation is used to describe how the motion of microscopic particles changes with time, and its significance is self-evident. In traditional teaching, Schrödinger equation is usually introduced directly as a definition, or gradually guided and established by the wave-particle duality of experimental facts. However, the traditional guidance and construction methods have certain leaps, their logic is not rigorous, and they lack deep-seated principle support, which is not conducive to the in-depth understanding of some students. The purpose of this paper is to start from the deep-seated theoretical framework of symmetry and one-to-one correspondence of conservation quantities, carries out mathematical derivation on the basis of Taylor,s expansion, and gradually introduces Schrödinger equation on the basis of students, quantum mechanics and mathematical knowledge. Firstly, we introduce the traditional introduction methods. Secondly, on the basis of reviewing Taylor,s expansion, we introduce Taylor,s translation concept, which forms an organic combination of old and new knowledge and further stimulates students, creative thinking. Finally, the Schrödinger equation is naturally derived by using the concept of Taylor,s translation and Noether,s theorem.

Key words: Noether,s theorem, Taylor,s expansion, Schr?dinger equation, Taylor,s translation, creative thinking