Scalar-isoscalar excitation in dense quark matter

2002/09/22 by Prashanth Jaikumar, Ismail Zahed, Ismaïl Zahed
Earth and Planetary Sciences · Physics and Astronomy · #High-Energy Particle Collisions Research #High-pressure geophysics and materials #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1103/physrevc.67.045202

published as Phys.Rev. C67 (2003) 045202 · RevTeX, 11 pages, 4 figs

arxiv created 2002/09/22 · openalex publication_date 2003/04/28 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We study the spectrum of scalar-isoscalar excitations in the color-flavor locked phase of dense quark matter. The sigma meson in this phase appears as a four-quark state (of diquark and antidiquark) with a well-defined mass and extremely small width, as a consequence of its small coupling to two pions. The quark particle/hole degrees of freedom also contribute significantly to the correlator just above the threshold 2\ensuremathΔ, where \ensuremathΔ is the superconducting gap.

Citations

• Dynamical Model of Elementary Particles Based on an Analogy with Superconductivity. I
• Chiral perturbation theory to one loop
• The effective potential of composite diquark fields and the spectrum of resonances in dense QCD
• QCD at finite baryon density: nucleon droplets and color superconductivity
• The axial vector current in beta decay
• Review of Particle Physics
• Phenomenological Lagrangians