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Anisotropic admixture in color-superconducting quark matter
Michael Buballa1, Jirí Hosek, Micaela Oertel
1Institut für Kernphysik, Schlossgartenstrasse 9, D-64289 Darmstadt, Germany.
Physical Review Letters
|June 6, 2003
Summary
This study explores spin-1 Cooper pairing in quark matter, revealing spontaneous rotation symmetry breaking and a superfluid state with unique properties like a gapless, two-dimensional gas and an electromagnetic Meissner effect.
Area of Science:
- Condensed Matter Physics
- Quantum Chromodynamics
- High-Energy Nuclear Physics
Background:
- Color-superconducting quark matter is a state of deconfined quarks at high densities.
- Standard models often focus on spin-0 diquark condensates.
Purpose of the Study:
- To extend the analysis of two-flavor quark matter to include spin-1 Cooper pairing.
- To investigate the implications of this novel pairing on the system's properties.
Main Methods:
- Relativistic analysis of spin-1 Cooper pairing.
- Investigation of quasifermion dispersion laws.
- Thermodynamic analysis of the anisotropic phase.
Main Results:
- Spontaneous breakdown of rotation invariance due to the spin-1 gap.
- A critical temperature relation T(')(c) ~ delta(')(T=0)/3.
- For massless fermions, the system becomes a gapless, 2D gas with quadratic specific heat.
- Collective excitations exhibit linear dispersion, maintaining superfluidity.
- Observation of an electromagnetic Meissner effect.
Conclusions:
- Spin-1 Cooper pairing introduces significant anisotropy and novel phenomena in quark matter.
- The system retains superfluidity and exhibits exotic electromagnetic properties.
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