netket.operator.boson.number

Contents

netket.operator.boson.number#

netket.operator.boson.number(hilbert, site, dtype=<class 'float'>, *, cls=<class 'netket.operator._local_operator.jax.LocalOperatorJax'>)[source]#

Builds the number operator \(\hat{a}^\dagger\hat{a}\) acting on the site-th of the Hilbert space hilbert.

If hilbert is a non-Bosonic space of local dimension M, it is considered as a bosonic space of local dimension M.

Parameters:

  • hilbert (DiscreteHilbert) – The hilbert space.

  • site (int) – The site on which this operator acts.

  • dtype (Union[None, str, type[Any], dtype, _SupportsDType]) – The datatype to use for the matrix elements.

  • cls (type[_LocalOperatorT])

Return type:

TypeVar(_LocalOperatorT, bound= LocalOperatorBase)

Returns:

An instance of {class}`nk.operator.LocalOperator`.

Contents