Aspects of high density effective theory in QCD

1999/05/31 by Deog Ki Hong · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0550-3213(00)00330-8

published as Nucl.Phys. B582 (2000) 451-476 · 23 pages, 5 figures. The gap equations are re-analyzed in the HDL approximation

arxiv created 2000/02/01 · openalex publication_date 2000/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study an effective theory of QCD at high density in detail, including the finite temperature effects and the leading order correction in 1/μ expansion. We investigate the Cooper pair gap equation and find that the color-flavor locking phase is energetically preferred at high density. We also find the color-superconducting phase transition occurs in dense quark matter when the chemical potential is larger than 250± 100~\rm MeV and the temperature is lower than 0.57 times the Cooper pair gap in the leading order in the hard-dense-loop approximation. The quark-neutrino four-Fermi coupling and the quark-axion coupling receive significant corrections in dense quark matter.

Citations

• Effective Field Theories
• Chiral perturbation theory to one loop
• QCD at finite baryon density: nucleon droplets and color superconductivity
• Emission of axions in strongly magnetized stars
• Phase diagram of QCD
• Phenomenological Lagrangians

Cited by

• Ground state of gapless two flavor color superconductors
• Pseudoscalar Goldstone bosons in the color-flavor locked phase at moderate densities
• Spontaneous current generation in the 2SC phase
• Color superconductivity in dense quark matter