TwoParticleOperator

class adcc.TwoParticleOperator(spaces, symmetry=OperatorSymmetry.HERMITIAN)

Bases: NParticleOperator

Construct a TwoParticleOperator object. All blocks are initialised as zero blocks.

Parameters:

• spaces (adcc.MoSpaces or adcc.ReferenceState or adcc.LazyMp) – MoSpaces object

• symmetry (OperatorSymmetry, optional)