netket.operator.SumOperator#

class netket.operator.SumOperator[source]#

Bases: ContinuousOperator

This class implements the action of the _expect_kernel()-method of ContinuousOperator for a sum of ContinuousOperator objects.

Inheritance
Inheritance diagram of netket.operator.SumOperator
__init__(*operators, coefficients=1.0, dtype=None)[source]#

Returns the action of a sum of local operators. :type operators: tuple[ContinuousOperator, ...] :param operators: A list of ContinuousOperator objects :type coefficients: Union[float, Iterable[float]] :param coefficients: A coefficient for each ContinuousOperator object :type dtype: Optional[Any] :param dtype: Data type of the coefficients

Parameters:
Attributes
H#

Returns the Conjugate-Transposed operator

T#

Returns the transposed operator

coefficients#
dtype#
hilbert#

The hilbert space associated to this observable.

is_hermitian#
operators#

The list of all operators in the terms of this sum. Every operator is summed with a corresponding coefficient

Methods
collect()#

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:

AbstractOperator

conj(*, concrete=False)#
Return type:

AbstractOperator

conjugate(*, concrete=False)#

Returns the complex-conjugate of this operator.

Parameters:

concrete – if True returns a concrete operator and not a lazy wrapper

Return type:

AbstractOperator

Returns:

if concrete is not True, self or a lazy wrapper; the complex-conjugated operator otherwise

transpose(*, concrete=False)#

Returns the transpose of this operator.

Parameters:

concrete – if True returns a concrete operator and not a lazy wrapper

Return type:

AbstractOperator

Returns:

if concrete is not True, self or a lazy wrapper; the transposed operator otherwise