Can cold quark matter be solid?

Details Can cold quark matter be solid? Can cold quark matter be solid?

2010-02-24

arxiv.org/abs/1002.4469v3

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Proceedings of IWARA2009 (IJMP D)

Scientific paper

The state of cold quark matter really challenges both astrophysicists and particle physicists, 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 clustering 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.

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