Chern Number Calculation

List of file:

• test.py: test the class cLasstd2D
• `FL_funcs.py
• Fl_dis.py
• README.md
• cLasstd2D.py
• chern_2DHall.py
• chern_graphen_Time_Periodic.py
• graphene_chern.py
• hofstadter.py

Calss cLasstd2D basic object is an infinite two-dimensional lattice in $k$-representation. The object is given in terms of the lattice Hamiltonian. The lattice can be with different characteristic parameters such as the hopping amplitude. In this implementation the effective Floquet Hamiltonian can be calculated over a period of applied time-dependent field. One simple example is the time-dependency of hopping amplitude.