Quantized linearσmodel at finite temperature, and nucleon properties

The baryon mass calculation in the chiral soliton model at finite temperature and density

“…And the baryon mass E B decreases more and more rapidly with the temperature or chemical potential increasing. Other works employing the same model had presented the baryon mass [28][29][30][31]. Our curve is quite similar with the curve E * of Fig.4 in Ref.…”

“…However, this treatment is not proper, as the soliton energy could not go back to the right form when temperature and density go to zero. In other studies [28][29][30], the background energy has not been well subtracted, and the baryon mass becomes unphysically large at high temperatures or densities as a result. Now, let us make an analysis of the integral of the soliton energy.…”

“…This meets quite many papers, such as references [25][26][27]. However, there are also many papers which obtain that the hadron mass increase with the temperature increasing [28][29][30].…”

“…The nucleon properties has also been studied through the same model at finite temperatures and densities [28][29][30][31][32][33]. The effective masses have been obtained by these solitons.…”

“…In reference [31][32][33], the energy of the thermal medium is completely neglected, but under this treatment the baryon mass could not go back to the right result of the baryon mass at zero temperature and density. In references [28][29][30], the thermal medium contribution is not well subtracted which results in unphysical rising of a baryon mass at high temperatures. Our goal in this paper is to give a well defined baryon mass calculation in a thermal medium within the soliton model.…”