SEARCH Articles Figures Tables Annihilation operators unitary transformations Approximate Unitary and Truncated Optimum Transformations Atomic Unitary Transformation Basis sets unitary transformation Creation operators unitary transformations Examples of unitary transformations Exponential unitary transformations of states in Fock space Exponential unitary transformations of the elementary operators First Unitary Transformation Fock-space unitary transformation Gauge field unitary transformation General Parametrization of Unitary Transformations Invariance with respect to a unitary transformation Second Unitary Transformation Sequential Unitary Decoupling Transformations Spin operator unitary transformation Symmetry-restricted unitary transformations Third Unitary Transformation Transformation, unitary, hybrid orbitals Unitary Transformations of Orbitals Unitary Transformations of the Dirac Hamiltonian Unitary exponential operator transformation Unitary transformation configuration Unitary transformation integrable systems Unitary transformation matrices Unitary transformation notation Unitary transformation orbital Unitary transformation theorem Unitary transformation theory Unitary transformation trace invariance Unitary transformation, invariance