M Alford 2004 J. Phys. G: Nucl. Part. Phys. 30 S441 doi:10.1088/0954-3899/30/1/052
Dense quark matter in compact stars
M Alford
Show affiliationsThe densest predicted state of matter is colour superconducting quark matter, in which quarks near the Fermi surface form a condensate of Cooper pairs. This form of matter may well exist in the core of compact stars, and the search for signatures of its presence is an ongoing enterprise. Using a bag model of quark matter, I will discuss the effects of colour superconductivity on the mass-radius relationship of compact stars, showing that colour superconducting quark matter will occur in compact stars at values of the bag constant where ordinary quark matter would not be allowed. The resultant 'hybrid' stars with colour superconducting quark matter interior and nuclear matter surface have masses in the range 1.3–1.6 M
and radii 8–11 km.
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Issue 1 (January 2004)
Received 13 May 2003
Published 11 December 2003
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Dense quark matter in compact stars
M Alford 2004 J. Phys. G: Nucl. Part. Phys. 30 S441
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