Color Superconductivity and Confinement in the Chromodielectric Model

被引:1
|
作者
de Carvalho, S. M. [1 ]
Malheiro, M. [1 ]
Carlson, B. V. [1 ]
Frederico, T. [1 ]
Fiolhais, M. [2 ,3 ]
Scoccola, N. [4 ,5 ,6 ]
Grunfeld, A. G. [4 ,5 ,7 ]
机构
[1] Inst Tecnol Aeronaut, Dep Fis, Sao Jose Dos Campos, SP, Brazil
[2] Univ Coimbra, Dep Fis, P-3004516 Coimbra, Portugal
[3] Univ Coimbra, Ctr Fis Computac, P-3004516 Coimbra, Portugal
[4] Consejo Nacl Invest Cient & Tecn, RA-1033 Buenos Aires, DF, Argentina
[5] Comis Natl Energia Atom, Dept Phys, Buenos Aires, DF, Argentina
[6] Univ Favaloro, RA-1078 Buenos Aires, DF, Argentina
[7] Sultan Qaboos Univ, Dept Phys, Muscat, Oman
基金
巴西圣保罗研究基金会;
关键词
RELATIVISTIC NUCLEAR-MATTER; QUARK STARS;
D O I
10.1016/j.nuclphysbps.2010.02.049
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We derive an effective Lagrangian for pairing in nonlinear chromodielectric models (CDM), in leading order. The effective pairing coupling depends explicitly on the confinement field, chi, of the CDM. The self-consistent gap equations are constructed and solved for one example. For a. quartic chi potential used in the calculations, in the chiral solution, obtained for large values of the confining field and very low quarks masses, the quarks do not pair. The chiral breaking solution, where chi is small and the quarks are massive, does show pairing. We show that the vector channel of the gap is much weaker than the scalar one. At small densities the gap increases dramatically and the corresponding quark matter collapses. However this occurs for densities where our approximation is no longer valid since pairing energy becomes of the order of magnitude of the sum of the kinetic and potential energies.
引用
收藏
页码:308 / 313
页数:6
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