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Electronic structure Part I: overview and background topics
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Electronic structure Part I: overview and background topics
Created
2025-09-04
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Updated
2025-09-12
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physics
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Word Count:
2
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Reading Time:
1mins
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1 Introduction
Author:
JoyCe
Link:
http://cogitamus.xyz/2025/09/04/Part_1_OVERVIEW_AND_BACKGROUND_TOPICS/
Copyright Notice:
All articles on this blog are licensed under
CC BY-NC-SA 4.0
unless otherwise stated.
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Quantum Mechanics Volumn I
使用指南此书由章节和补充构成。卷I对应本科生，卷II和III对应研究生。21个章节本身是完整的，可以独立于补充进行学习。补充之间通常是互相独立的，不应尝试掌握所有的补充材料。而应根据兴趣和需要选取二三。书中一些小字号的段落，在初读时可以忽略。 I...
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Introduction to Many Body Physics
1 尺度与复杂性Many-body Schrodinger equation is unable to be solved. There is a huge gulf between macroscopic and microscopic theorem.This gulf can be described by four scales. T: time L: length N: number of particles $\mathcal{C}$: complexity 1.1 $T$: 时间尺度通过不确定原理$\Delta\tau\Delta E\sim \hbar$，我们可以估计特征的量子时间：$$\Delta\tau\sim \frac{\hbar}{[1eV]}\sim1\times10^{-15}s$$相比于宏观尺度下的特征时间$1s$，两者相差$10^{15}$。 1.2 $L$：长度尺度可以用氢原子中点子的de Broglie波长作为量子世界的特征长度尺寸：$$L_{quantum}\sim 1\times10^{-10}m$$相比于一个宏观长度$1\...
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