openfermion.linalg.QubitDavidson
Davidson algorithm applied to a QubitOperator.
Inherits From: Davidson
openfermion.linalg.QubitDavidson(
qubit_operator, n_qubits=None, options=None
)
Methods
get_lowest_n
View source
get_lowest_n(
n_lowest=1, initial_guess=None, max_iterations=None
)
Returns n
smallest eigenvalues and corresponding eigenvectors for linear_operator.
Args |
n
|
int
The number of states corresponding to the smallest eigenvalues
and associated eigenvectors for the linear_operator.
|
initial_guess
|
numpy.ndarray[complex]
Initial guess of eigenvectors
associated with the n smallest eigenvalues.
|
max_iterations
|
int
Max number of iterations when not converging.
|
Returns |
success
|
bool
Indicates whether it converged, i.e. max elementwise
error is smaller than eps.
|
eigen_values
|
numpy.ndarray[complex]
The smallest n eigenvalues.
|
eigen_vectors
|
numpy.ndarray[complex]
The smallest n eigenvectors
corresponding with those eigen values.
|
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Last updated 2024-04-26 UTC.
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