Finite-temperature mean-field approximations for shell model Hamiltonians: the code HF-SHELL

We present the code HF-SHELL for solving self-consistent mean-field equations configuration-interaction shell model Hamiltonians in proton-neutron formalism. The can calculate both ground-state and finite-temperature properties Hartree-Fock (HF), HF+Bardeen-Cooper-Schrieffer (HF+BCS), Hartree-Fock-Bogoliubov (HFB) approximations. Particle-number projection after variation is incorporated to reduce grand-canonical ensemble canonical ensemble, making particularly suitable calculation of nuclear state densities. does not impose axial symmetry allows triaxial quadrupole deformations. self-consistency cycle robust through use heavy-ball optimization technique implementation different options constrain degrees freedom.