netket.operator.AbstractOperator#
- class netket.operator.AbstractOperator[source]#
Bases:
AbstractObservableAbstract class for quantum Operators.
An operator is a general object that defines a linear transformation on vectors of the Hilbert space and their expectation value can be comptued starting from a variational state using the method expect or expect_and_grad of the variational states.
If the object is not a linear operator but some more general function, it should inherit from {class}`~netket.operator.AbstractObservable` instead.
Operators over discrete hilbert spaces that can be converted to a dense representation should instead inherit from {class}`~netket.operator.DiscreteOperator`, while operators over that only work over continuous hilbert spaces should inherit from {class}`~netket.operator.ContinuousOperator`.
This class determines the basic methods that an operator must implement to work correctly with NetKet.
- Inheritance
- Attributes
- H#
Returns the Conjugate-Transposed operator
- T#
Returns the transposed operator
- dtype#
The dtype of the operator’s matrix elements ⟨σ|Ô|σ’⟩.
- hilbert#
The hilbert space associated to this observable.
- is_hermitian#
Returns true if this operator is hermitian.
- Methods
- collect()[source]#
Returns a guaranteed concrete instance of an operator.
As some operations on operators return lazy wrappers (such as transpose, hermitian conjugate…), this is used to obtain a guaranteed non-lazy operator.
- Return type:
- conjugate(*, concrete=False)[source]#
Returns the complex-conjugate of this operator.
- Parameters:
concrete – if True returns a concrete operator and not a lazy wrapper
- Return type:
- Returns:
if concrete is not True, self or a lazy wrapper; the complex-conjugated operator otherwise