update

Tutorial/calculate_Chern_number_and_Wilson_loop.py

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+import guan
+import numpy as np
+from math import *
+
+chern_number = guan.calculate_chern_number_for_square_lattice(guan.hamiltonian_of_one_QAH_model, precision=100)
+print('\nChern number=', chern_number, '\n')
+
+wilson_loop_array = guan.calculate_wilson_loop(guan.hamiltonian_of_ssh_model)
+print('Wilson loop =', wilson_loop_array)
+p = np.log(wilson_loop_array)/2/pi/1j
+print('\np =', p, '\n')