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Update calculation_of_Chern_number_by_Wilson_loop_for_degenerate_case.py

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guanjihuan 2022-08-12 19:25:07 +08:00
parent 5f45471278
commit a9c90d96b6
1 changed files with 5 additions and 5 deletions
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academic_codes/2022.08.12_calculation_of_Chern_number_by_Wilson_loop_for_degenerate_case/calculation_of_Chern_number_by_Wilson_loop_for_degenerate_case.py
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@ -27,23 +27,23 @@ def main():
Ny = 20 Ny = 20
H_k = functools.partial(hamiltonian, Ny=Ny, B=1/Ny) H_k = functools.partial(hamiltonian, Ny=Ny, B=1/Ny)
chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, num_of_bands=range(int(Ny/2)-1), precision_of_Wilson_loop=5) chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, index_of_bands=range(int(Ny/2)-1), precision_of_Wilson_loop=5)
print('价带：', chern_number) print('价带：', chern_number)
print() print()
chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, num_of_bands=range(int(Ny/2)+2), precision_of_Wilson_loop=5) chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, index_of_bands=range(int(Ny/2)+2), precision_of_Wilson_loop=5)
print('价带（包含两个交叉能带）：', chern_number) print('价带（包含两个交叉能带）：', chern_number)
print() print()
chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, num_of_bands=range(Ny), precision_of_Wilson_loop=5) chern_number = calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(H_k, index_of_bands=range(Ny), precision_of_Wilson_loop=5)
print('所有能带：', chern_number) print('所有能带：', chern_number)
# # 函数可通过Guan软件包调用。安装方法：pip install --upgrade guan # # 函数可通过Guan软件包调用。安装方法：pip install --upgrade guan
# import guan # import guan
# chern_number = guan.calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(hamiltonian_function, num_of_bands=[0, 1], precision_of_plaquettes=20, precision_of_Wilson_loop=5, print_show=0) # chern_number = guan.calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(hamiltonian_function, index_of_bands=[0, 1], precision_of_plaquettes=20, precision_of_Wilson_loop=5, print_show=0)
def calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(hamiltonian_function, num_of_bands=[0, 1], precision_of_plaquettes=20, precision_of_Wilson_loop=5, print_show=0): def calculate_chern_number_for_square_lattice_with_Wilson_loop_for_degenerate_case(hamiltonian_function, index_of_bands=[0, 1], precision_of_plaquettes=20, precision_of_Wilson_loop=5, print_show=0):
import math import math
delta = 2*math.pi/precision_of_plaquettes delta = 2*math.pi/precision_of_plaquettes
chern_number = 0 chern_number = 0