The European Physical Journal A

, Volume 41, Issue 3, pp 355–360 | Cite as

Color-symmetric superconductivity in a phenomenological QCD model

  • H. Bohr
  • C. Providência
  • J. da ProvidênciaEmail author
Regular Article - Theoretical Physics


In this paper, we construct a theory of the NJL type where superconductivity is present, and yet the superconducting state remains, in the average, color symmetric. This shows that the present approach to color superconductivity is consistent with color singletness. Indeed, quarks are free in the deconfined phase, but the deconfined phase itself is believed to be a color singlet. The usual description of the color superconducting state violates color singletness. On the other hand, the color superconducting state here proposed is color symmetric in the sense that an arbitrary color rotation leads to an equivalent state, with precisely the same physical properties.


12.39.Ki Relativistic quark model 12.39.Fe Chiral Lagrangians 


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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Department of PhysicsDanish Technical UniversityLyngbyDenmark
  2. 2.CFC, Departamento de FísicaUniversidade de CoimbraCoimbraPortugal

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