Factory functions to construct widely used lattice models

Collaboration diagram for Factory functions to construct widely used lattice models:

Modules
	Factory functions for Coulomb interaction terms
	Factory functions for fermionic density-density interaction terms
	Factory functions for fermionic hopping terms
	Factory functions for magnetization terms
	Factory functions for single fermion level terms
	Factory functions for spin coupling terms
	Factory functions for spin-flip and pair-hopping terms
	Factory functions for terms with bosonic degrees of freedom

Detailed Description