13 lines
431 B
Python
13 lines
431 B
Python
import guan
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import numpy as np
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from math import *
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# calculate Chern number
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chern_number = guan.calculate_chern_number_for_square_lattice(guan.hamiltonian_of_one_QAH_model, precision=100)
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print('\nChern number=', chern_number)
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# calculate Wilson loop
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wilson_loop_array = guan.calculate_wilson_loop(guan.hamiltonian_of_ssh_model)
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print('Wilson loop =', wilson_loop_array)
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p = np.log(wilson_loop_array)/2/pi/1j
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print('p =', p, '\n') |