The influence of the finite temperature on the antiferromagnetic (AFM) spin
ordering in symmetric nuclear matter with the effective Gogny interaction is
studied within the framework of a Fermi liquid formalism. It is shown that the
AFM spin polarization parameter of partially polarized nuclear matter for low
enough temperatures increases with temperature. The entropy of the AFM spin
state for some temperature range is larger than the entropy of the normal
state. Nerveless, the free energy of the AFM spin state is always less than the
free energy of the normal state and, hence, the AFM spin polarized state is
preferable for all temperatures below the critical temperature.Comment: To appear in PRC; some references and comments adde
