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Phase diagram of two-color quark matter at nonzero baryon and isospin density
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SYSNO ASEP 0346583 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Phase diagram of two-color quark matter at nonzero baryon and isospin density Author(s) Andersen, J. O. (NO)
Brauner, Tomáš (UJF-V) RIDSource Title Physical Review. D - ISSN 0556-2821
Roč. 81, č. 9 (2010), 096004/1-096004/14Number of pages 14 s. Language eng - English Country US - United States Keywords COLOR SUPERCONDUCTIVITY ; QUANTUM CHROMODYNAMICS ; PERTURBATION-THEORY Subject RIV BE - Theoretical Physics CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000278145100084 DOI 10.1103/PhysRevD.81.096004 Annotation 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 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 by-product, we clarify the calculation of the thermodynamic potential in the presence of the Fulde-Ferrell pairing, which was previously based on an ad hoc subtraction of an unphysical cutoff artifact. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2011
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