publication . Preprint . Article . 2005

Strange quark matter within the Nambu-Jona-Lasinio model

Igor Mishustin;
Open Access English
  • Published: 22 Nov 2005
  • Country: Germany
Abstract
Equation of state of baryon rich quark matter is studied within the SU(3) Nambu-Jona-Lasinio model with flavour mixing interaction. Possible bound states (strangelets) and chiral phase transitions in this matter are investigated at various values of strangeness fraction S/3B. The model predictions are very sensitive to the ratio of vector (Gv) and scalar (Gs) coupling constants. At Gv/Gs=0.5 and zero temperature the maximum binding energy (about 15 MeV per baryon) takes place when strangeness fraction is about 0.4. Such strangelets are negatively charged and have typical life times of the order of 100 ns. Calculations are carried out also at finite temperatures....
Subjects
arXiv: Nuclear TheoryNuclear ExperimentHigh Energy Physics::Phenomenology
free text keywords: ddc:530, High Energy Physics - Phenomenology, Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics
27 references, page 1 of 2

[1] A.B. Migdal, Zh. Eksp. Teor. Fiz. 61, 2209 (1971).

[2] A.B. Migdal, G.A. Sorokin, O.A. Markin, and I.N. Mishustin, Sov. Phys. JETP 45, 654 (1977).

[3] T.D. Lee and G.C. Wick, Phys. Rev. D9, 2291 (1974).

[4] Y. Nambu and G. Jona-Lasinio, Phys. Rev. 122, 345 (1961); 124, 246 (1961).

[5] V.G. Vaks and A.I. Larkin, Sov. J. JETP 13, 192 (1961).

[6] U. Vogl and W. Weise, Prog. Part. Nucl. Phys. 27, 195 (1991).

[7] S.P. Klevansky, Rev. Mod. Phys. 64, 649 (1992).

[8] M. Asakawa and Y. Yazaki, Nucl. Phys. A504, 668 (1989).

[9] S. Klimt, M. Lutz, and W. Weise, Phys. Lett. B249, 386 (1990).

[10] J. Cugnon, M. Jaminon, and B. Van den Bossche, Nucl. Phys. A598, 515 (1996).

[11] K.G. Klimenko and A.S. Vshivtsev, Zh. Eksp. Teor. Fiz. 84, 1047 (1997) [Sov. J. JETP 84, 1057 (1997)].

[12] J. Berges and K. Rajagopal, Nucl. Phys. B538, 215 (1999).

[13] T.M. Schwarz, S.P. Klevansky, and G. Rapp, Phys. Rev. C60, 055205 (1999).

[14] V. Koch, T.S. Biro, J. Kunz, and U. Mosel, Phys. Lett. B185, 1 (1987); V. Koch, B. Bl¨attel, and U. Mosel, ibid. B194, 331 (1987).

[15] M. Buballa, Nucl. Phys. A611, 393 (1996); M. Buballa and M. Oertel, ibid. A642, 39 (1998).

27 references, page 1 of 2
Powered by OpenAIRE Research Graph
Any information missing or wrong?Report an Issue