scholarly journals Effects of quark matter and color superconductivity in compact stars

2003 ◽  
Author(s):  
D. Blaschke
Keyword(s):  
Quark Matter ◽  
Compact Stars ◽  
Color Superconductivity

scholarly journals CAN COLD QUARK MATTER BE SOLID?

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1437-1446 ◽  
Author(s):  
R. XU
Keyword(s):  
Solid State ◽  
Interaction Energy ◽  
Ground State ◽  
Quark Matter ◽  
Fermi Gas ◽  
The State ◽  
Compact Stars ◽  
Color Superconductivity ◽  
Many Body ◽  
Coupling Treatment

The state of cold quark matter challenges both astrophysicists and particle physicists, and even many-body physicists. It is conventionally suggested that BCS-like color superconductivity occurs in cold quark matter; however, other scenarios with a ground state rather than of Fermi gas could still be possible. It is addressed that quarks are dressed and clustered in cold quark matter at realistic baryon densities of compact stars, since a weakly coupling treatment of the interaction between constituent quarks would not be reliable. Cold quark matter is conjectured to be in a solid state if thermal kinematic energy is much lower than the interaction energy of quark clusters, and such a state could be relevant to different manifestations of pulsar-like compact stars.

scholarly journals Relativistic Cowling approximation for fluid oscillation modes of color superconducting self-bound stars

2012 ◽  
Vol 8 (S291) ◽  
pp. 451-451
Author(s):  
German Lugones ◽  
Cesar Vasquez Flores
Keyword(s):  
Equation Of State ◽  
Gravitational Waves ◽  
Internal Structure ◽  
Quark Matter ◽  
Normal Modes ◽  
Pressure Oscillation ◽  
Compact Stars ◽  
Color Superconductivity ◽  
Strange Stars ◽  
Oscillation Modes

AbstractThe investigation of the quasi-normal modes of oscillation of compact stars can reveal much information about their equation of state and internal structure mainly through the analysis of the expected emission of gravitational waves. In this work we study non-radial oscillation modes of strange stars consisting of color superconducting quark matter. We focus on the fundamental and pressure oscillation modes within the frame of the Cowling approximation. We discuss the observable features that may allow a differentiation among hadronic stars, strange stars, and strange stars with color superconductivity.

COLOR SUPERCONDUCTIVITY IN DENSE QUARK MATTER

2007 ◽  
Vol 16 (09) ◽  
pp. 2748-2762
Author(s):  
MICHAEL BUBALLA
Keyword(s):  
Phase Diagram ◽  
Quark Matter ◽  
Low Temperatures ◽  
Compact Stars ◽  
Color Superconductivity ◽  
Qcd Phase Diagram ◽  
Dense Quark Matter

The possible structure of the QCD phase diagram is discussed focusing on color superconducting quark matter in the region of low temperatures and moderately large densities which could be relevant for compact stars.

Color Superconductivity in Cold Dense Quark Matter

2005 ◽  
Vol 55 (5) ◽  
pp. 521-539 ◽  
Author(s):  
Michael Buballa ◽  
Micaela Oertel
Keyword(s):  
Quark Matter ◽  
Color Superconductivity ◽  
Dense Quark Matter

scholarly journals Deconfinement signals from pulsar timing

2000 ◽  
Vol 177 ◽  
pp. 603-604 ◽  
Author(s):  
Hovik Grigorian ◽  
Gevorg Poghosyan ◽  
Edvard Chubarian ◽  
David Blaschke
Keyword(s):  
General Relativity ◽  
Quark Matter ◽  
Compact Star ◽  
Baryon Number ◽  
Rotational Frequency ◽  
Compact Stars ◽  
Pulsar Timing

AbstractThe occurence of a quark matter core in rotating compact stars has been investigated within general relativity as a function of both the rotational frequency and the total baryon number. We demonstrate that the deviation of the braking index fromn= 3 signals not only the occurence but also the size of a quark matter core in a pulsar. We suggest that in systems with mass accretion onto a rapidly rotating compact star a spin-down to spin-up transition might signal a deconfinement transition in its interior.

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