Diquarks and Density

Details Diquarks and Density Diquarks and Density

2000-12-06

arxiv.org/abs/nucl-th/0012023v2

Lect.Notes Phys.578:218-234,2001

Physics

Nuclear Physics

Nuclear Theory

16 pages, LaTeX2e, Contribution to the Proceedings of "Physics of Neutron Star Interiors," a workshop at ECT$\ast$, Trento, It

Scientific paper

We describe aspects of the role that diquark correlations play in understanding baryon structure and interactions. The significance of diquarks in that application motivates a study of the possibility that dense hadronic matter may exhibit diquark condensation; i.e., quark-quark pairing promoted by a quark chemical potential. A Gorkov-Nambu-like gap equation is introduced for QCD and analysed for 2-colour QCD (QC2D) and, in two qualitatively different truncations, for QCD itself. Among other interesting features, we illustrate that QC2D with massive fermions undergoes a second-order transition to a superfluid phase when the chemical potential exceeds 0.5 m.pi. In the QCD application we illustrate that the sigma= .neq. 0 phase, which determines the properties of the mass spectrum at zero temperature and chemical potential, is unstable with respect to the superfluid phase when the chemical potential exceeds approx. 2 sigma, and that at this point the diquark gap is large, approx. 0.5 sigma. The superfluid phase survives to temperatures greater than that expected in the core of compact stars.

Affiliated with

Also associated with

No associations

Rating

Diquarks and Density does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Diquarks and Density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diquarks and Density will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-633359