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from fast_math import bra_ket, op_ket | |
from memory_profiler import profile | |
def chepyshev_evaluate_m(phi_l, phi_r, ham, m_limit): | |
phi_0 = phi_r | |
cheb_list = [bra_ket(phi_l, phi_r)] | |
phi_1 = op_ket(ham, phi_0) | |
cheb_list.append(bra_ket(phi_l, phi_1)) | |
for m in range(2, m_limit): | |
phi_2 = 2 * op_ket(ham, phi_1) - phi_0 | |
cheb_list.append(bra_ket(phi_l, phi_2)) | |
phi_0 = phi_1 | |
phi_1 = phi_2 | |
return cheb_list | |