Color superconductivity in a self-consistent NJL-type model

An effective Lagrangian for quark pairing in nonlinear chromodielectric models (CDM) is derived in the leading order. The effective pairing coupling depends explicitly on the confinement field, χ, of the CDM manifesting a confinement effect on color superconductivity. The self-consistent gap equations are constructed and solved for the color-flavor locked phase. The pairing coupling, for the quartic χ potential used in the calculations, is inversely proportional to the second power of the χ field and to the χ mass squared. In the chiral solution the quarks do not pair, but in the chiral breaking solution, where χ is small and the effective pairing interaction is stronger, it does show pairing. Our results indicate that the vector channel of the gap is weaker than the scalar one.

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A FOUR-FERMION LATTICE MODEL

International Journal of Modern Physics A ◽

10.1142/s0217751x95002151 ◽

1995 ◽

Vol 10 (32) ◽

pp. 4651-4669

Author(s):

S. RANDJBAR-DAEMI ◽

J. STRATHDEE

Keyword(s):

Lattice Model ◽

Weak Coupling ◽

Weak Coupling Limit ◽

Type Model ◽

Dirac Fermions ◽

Fermion Propagator ◽

Yang Mills ◽

Self Consistent ◽

Low Energies ◽

Local Symmetries

The weak coupling limit of an Ising type model on the F4 lattice is examined. It is shown that by imposing some constraints on the Ising couplings, one can express the weak coupling limit as a multidimensional Berezin integral with local symmetries, We explore the possibility of deriving a fermion propagator by a self-consistent, Nambu-Jona-Lasinio type of calculation. We argue that at low energies this model describes Dirac fermions coupled to Yang-Mills fields.

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COLOR SUPERCONDUCTIVITY AT FINITE DENSITY AND TEMPERATURE WITH FLAVOR ASYMMETRY

International Journal of Modern Physics E ◽

10.1142/s0218301301000642 ◽

2001 ◽

Vol 10 (06) ◽

pp. 501-510 ◽

Cited By ~ 19

Author(s):

O. KIRIYAMA ◽

S. YASUI ◽

H. TOKI

Keyword(s):

Low Temperature ◽

Phase Structure ◽

Thermodynamic Potential ◽

Tricritical Point ◽

Mixed Phase ◽

Type Model ◽

Color Superconductivity ◽

Finite Density

Color superconductivity of QCD at finite density, temperature and flavor asymmetry is studied within an approximation where the interaction is modeled upon four-fermion interactions. We calculate the thermodynamic potential in the so-called NJL-type model and study the phase structure at finite density, temperature and flavor asymmetry. We find that a mixed phase appears at sufficiently large flavor asymmetry and low temperature. A tricritical point in the T–μB–μI plane is also found.

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Self-consistent evaluation of quark masses in three flavor crystalline color superconductivity

Journal of High Energy Physics ◽

10.1088/1126-6708/2007/04/036 ◽

2007 ◽

Vol 2007 (04) ◽

pp. 036-036 ◽

Cited By ~ 25

Author(s):

Nicola D Ippolito ◽

Giuseppe Nardulli ◽

Marco Ruggieri

Keyword(s):

Color Superconductivity ◽

Quark Masses ◽

Self Consistent

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A self-consistent Eulerian rate type model for finite deformation elastoplasticity with isotropic damage

International Journal of Solids and Structures ◽

10.1016/s0020-7683(00)00094-9 ◽

2001 ◽

Vol 38 (4) ◽

pp. 657-683 ◽

Cited By ~ 21

Author(s):

O.T. Bruhns ◽

H. Xiao ◽

A. Meyers

Keyword(s):

Finite Deformation ◽

Type Model ◽

Self Consistent ◽

Isotropic Damage ◽

Rate Type

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The evolution of the Kuiper belt during the formation of the outer planets

International Astronomical Union Colloquium ◽

10.1017/s0252921100031213 ◽

1999 ◽

Vol 173 ◽

pp. 37-44

Author(s):

M.D. Melita ◽

A. Brunini

Keyword(s):

Kuiper Belt ◽

Outer Planets ◽

Self Consistent ◽

Planetary Bodies ◽

Mass Depletion

AbstractA self-consistent study of the formation of planetary bodies beyond the orbit of Saturn and the evolution of Kuiper disks is carried out by means of an N-body code where accretion and gravitational encounters are considered. This investigation is focused on the aggregation of massive bodies in the outer planetary region and on the consequences of such process in the corresponding cometary belt. We study the link between the bombardment of massive bodies and mass depletion and eccentricity excitation.

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