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- import numpy as np
- import scipy.special as sps
- def sph_bessel_i(n, x, **kwargs):
- return sps.spherical_in(n, x, **kwargs)
- def sph_bessel_k(n, x, **kwargs):
- return 2 / np.pi * sps.spherical_kn(n, x, **kwargs)
- def sph_harm(l, m, theta, phi, **kwargs):
- return sps.sph_harm(m, l, phi, theta, **kwargs)
- def interaction_coef_C(l, p, x):
- return np.pi / 2 * x * sps.iv(l + 1 / 2, x) * sps.iv(p + 1 / 2, x)
- def coefficient_Cpm(l, x):
- return x * sps.kv(l + 1 / 2, x) * sps.iv(l + 1 / 2, x)
- def coefficient_Cim(l, x):
- return sps.kv(l + 1 / 2, x) / sps.kv(l + 3 / 2, x)
- def coef_C_diff(l, x):
- return 1 / (x * sps.iv(l + 1 / 2, x) * sps.kv(l + 3 / 2, x))
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