Schwinger-Dyson approach to color superconductivity in dense QCD

Hong, Deog Ki; Miransky, V.A.; Shovkovy, I.A.; Wijewardhana, L.C.R.

doi:10.1103/PhysRevD.61.056001

Schwinger-Dyson approach to color superconductivity in dense QCD

Deog Ki Hong
(
- Pusan Natl. U. and
- Boston U.
)
,
V.A. Miransky
(
- BITP, Kiev
)
,
I.A. Shovkovy
(
- Cincinnati U.
)
,
L.C.R. Wijewardhana
(
- Cincinnati U.
)

Jun, 1999

11 pages

Published in:

Phys.Rev.D 61 (2000) 056001,
Phys.Rev.D 62 (2000) 059903 (erratum)

e-Print:

hep-ph/9906478 [hep-ph]

DOI:

Report number:

BUHEP-99-14,
UCTP-109-99

View in:

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Abstract: (arXiv)

The problem of color superconductivity in dense QCD is reconsidered in the improved rainbow approximation to the Schwinger-Dyson equation. The effect of the unscreened magnetic modes of gluons on the value of the color condensate is studied. In particular, it is shown that, at sufficiently large values of the chemical potential, these modes lead to the enhancement of the superconducting order parameter. The interplay between the instanton induced interaction and the one-gluon induced one in color superconductivity is discussed.

Note:

REVTeX: 13 pages + 1 figure (new). Sec. 5 is revised, the old Sec. 6 is removed, a new Appendix is added. The final version accepted for publication in Phys. Rev. D

quantum chromodynamics
density: high
color: superconductivity
quark: propagator
Dyson-Schwinger equation: approximation
gluon: exchange
gluon: propagator
vacuum polarization
Meissner effect
potential: chemical

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