Recent content by Hao Hsu

  1. Hao Hsu

    Graduate Theory to argue whether matrix elements vanish or not?

    Thank you very much! I will study them this weekend ^^
  2. Hao Hsu

    Graduate Theory to argue whether matrix elements vanish or not?

    I have known: (1) A Hamiltonian, say, H(k), where k is the crystal momentum. (2) An appropriate complete basis set {a_1,a_2,a_3…}. (3) Some symmetric operators {A,B,…} which commute with H(k), i.e. [A,H]=[B,H]=...=0. Of course, by calculation, I can get any matrix element of H(k), i.e...
  3. Hao Hsu

    Who is Hsu Hao and What is First-Principle Calculation? A Brief Introduction.

    Hello every one, I am Hsu Hao from Taiwan, currently a research assistant doing research related to first-principle calculations. Hope we can learn from each other and enjoy physics together.