Artículos de revistas
Quark Condensate And Nucleon-antinucleon Phase Transition From Hadronic Models At Finite Temperature
Registro en:
Nuclear Physics B - Proceedings Supplements. , v. 199, n. 1, p. 349 - 352, 2010.
9205632
10.1016/j.nuclphysbps.2010.02.058
2-s2.0-77951542191
Autor
Lourenco O.
Dutra M.
Timoteo V.S.
Delfino A.
Institución
Resumen
We investigate different hadronic model parametrizations at high temperature regime. All the models were constructed to reproduce some observables at low temperature. At high temperature this study becomes important once a copious number of antiparticles arises playing an essential role in the high energy heavy-ion collision experiments like RHIC, SPS and LHC. In our study we observe a model dependent first-order phase transition at about 180 MeV. It was also verified that the order parameter, in-medium effective baryon mass, is very similar to the quark condensate as a function of the temperature. This result acquires importance since the quark condensate is the phase transition order parameter from hadronic (massive mesons) to chiral (massless mesons) phases. © 2010 Elsevier B.V. 199 1 349 352 Delfino, A., Chiapparini, M., Bracco, M.E., Castro, L., Epsztein, S.E., (2001) J. Phys. G, 27, p. 2251 Braun-Munzinger, P., Magestro, D., Redlich, K., Stachel, J., (2001) Phys. Lett. B, 518, p. 21 Zschiesche, D., Schramm, S., Schaffner-Bielich, J., Stöcker, H., Greiner, W., (2002) Phys. Lett. B, 547, p. 7 Theis, J., Stöcker, H., Polonyi, J., (1983) Phys. Rev. D, 28, p. 2286 Delfino, A., Jansen, M., Timóteo, V.S., (2008) Phys. Rev. C, 78, p. 034909 Boguta, J., Bodmer, A.R., (1977) Nucl. Phys. A, 292, p. 413 Reinhard, P.-G., (1989) Rep. Prog. Phys., 52, p. 439 Lalazissis, G.A., Konig, J., Ring, P., (1997) Phys. Rev. C, 55, p. 540 Bender, M., Rutz, K., Reinhard, P.-G., Maruhn, J.A., Greiner, W., (1999) Phys. Rev. C, 60, p. 34304 Serot, B.D., Walecka, J.D., (1997) Int. J. Mod. Phys. E, 6, p. 515 Serot, B.D., Walecka, J.D., (1986) Adv. Nucl. Phys., 16, p. 1 Delfino, A., Dey, J., Dey, M., Malheiro, M., (1995) Phys. Lett. B, 363, p. 17 Delfino, A., Dey, J., Dey, M., Malheiro, M., (1996) Z. Phys. C, 71, p. 507 Cohen, T.D., Furnstahl, R.J., Griegel, D.K., (1992) Phys. Rev. C, 45, p. 1881 Malheiro, M., Dey, M., Delfino, A., Dey, J., (1997) Phys. Rev. C, 55, p. 521