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refactor: correlators._solve_GEVP simplified and optimized, test added.

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This commit is contained in:
Fabian Joswig 2022-05-16 11:35:23 +01:00
parent d60212739b
commit ba054fa11c
2 changed files with 18 additions and 5 deletions
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8
pyerrors/correlators.py
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@ -1219,8 +1219,6 @@ def _sort_vectors(vec_set, ts):
return sorted_vec_set
def _GEVP_solver(Gt, G0): # Just so normalization an sorting does not need to be repeated. Here we could later put in some checks
sp_val, sp_vecs = scipy.linalg.eigh(Gt, G0)
sp_vecs = [sp_vecs[:, np.argsort(sp_val)[-i]] for i in range(1, sp_vecs.shape[0] + 1)]
sp_vecs = [v / np.sqrt((v.T @ G0 @ v)) for v in sp_vecs]
return sp_vecs
def _GEVP_solver(Gt, G0):
"""Helper function for solving the GEVP and sorting the eigenvectors."""
return scipy.linalg.eigh(Gt, G0)[1].T[::-1]