TwoParticleDensity

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

Bases: NParticleDensity

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

Parameters:

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

• symmetry (OperatorSymmetry, optional)