Chiral bands with rigid quasiparticle alignments

A triaxial particle-rotor Hamiltonian describing a system of two high-j quasiparticles rigidly aligned to a triaxial collective core, is treated semi classically within a time-dependent variational principle. Quantizing the energy function for a given angular momentum, one obtains a Schrödinger equation with a coordinate dependent effective mass for a chiral potential. The applicability of the formalism is discussed in terms of varying triaxial deformation and more general quasiparticle spin alignments. The model is exemplified by describing the partner bands in ¹³⁴Pr using the corresponding spectrum and wave-functions obtained for valence h_11/2 proton particle and h_11/2 neutron hole. Some perspectives of the model are also briefly discussed.