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This module is to find lowest eigenvalues with Davidson algorithm.
Classes
class Davidson: Davidson algorithm to get the n states with smallest eigenvalues.
class DavidsonError: Exceptions.
class DavidsonOptions: Davidson algorithm iteration options.
class QubitDavidson: Davidson algorithm applied to a QubitOperator.
class SparseDavidson: Davidson algorithm for a sparse matrix.
Functions
append_random_vectors(...): Appends exactly col orthonormal random vectors for vectors.
generate_random_vectors(...): Generates orthonormal random vectors with col columns.
orthonormalize(...): Orthonormalize vectors, so that they're all normalized and orthogoal.