Relativistic temperature-dependent Hartree-Fock calculation of spherical nuclei

The temperature-dependent Hartree-Fock approach is extended to the relativistic quantum-field-theory framework; exchange of σ, ω, ρ, and π mesons and photons are included. Application is made to two spherical nuclei, ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$. Temperature dependences of excitation energies, single-particle spectra, charge densities, and entropies are evaluated and compared to corresponding nonrelativistic calculations. We find a considerably larger thermal response for these nuclei when compared to the nonrelativistic results.