Phase diagram of two-color quark matter at nonzero baryon and isospin density

Details Phase diagram of two-color quark matter at nonzero baryon and isospin density Phase diagram of two-color quark matter at nonzero baryon and isospin density

2010-01-28

arxiv.org/abs/1001.5168v2

Phys.Rev.D81:096004,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, REVTeX4-1, 7 eps figures; v2: minor modifications + references added; version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.81.096004

We investigate the properties of cold dense quark matter composed of two colors and two flavors of light quarks. In particular, we perform the first model calculation of the full phase diagram at nonzero baryon and isospin density, thus matching the model-independent predictions of chiral perturbation theory at low density to the conjectured phase structure at high density. We confirm the presence of the Fulde-Ferrell (FF) phase in the phase diagram and study its dependence on the tunable parameter in the Lagrangian that simulates the effects of the quantum axial anomaly. As a byproduct, we clarify the calculation of the thermodynamic potential in the presence of the FF pairing, which was previously based on an ad hoc subtraction of an unphysical cutoff artifact. Furthermore, we argue that close to the diquark (or pion) Bose-Einstein condensation transition, the system behaves as a dilute Bose gas so that our simple fermionic model in the mean-field approximation is not quantitatively adequate. We suggest that including thermal fluctuations of the order parameter for Bose-Einstein condensation is crucial for understanding available lattice data.

Affiliated with

Also associated with

No associations

Rating

Phase diagram of two-color quark matter at nonzero baryon and isospin 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 Phase diagram of two-color quark matter at nonzero baryon and isospin density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase diagram of two-color quark matter at nonzero baryon and isospin density will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-254826