4.5 Article

Quarkyonic percolation and deconfinement at finite density and number of colors

Journal

PHYSICAL REVIEW C
Volume 88, Issue 2, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.88.024912

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Funding

  1. Helmholtz International Centre for FAIR
  2. DOE [DE-FG02-93ER40764]

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We examine the interplay between the percolation and the deconfinement phase transitions of Yang-Mills matter at finite temperature, quark chemical potential mu(Q), and number of colors N-c. We find that, whereas the critical N-c for percolation goes down with density, the critical N-c for confinement generally goes up. Because of this, Yang-Mills matter falls into two qualitatively different regimes: the low-N-c limit, where percolation does not occur because matter deconfines before it percolates, and the high-N-c limit, where there are three distinct phases-confined, deconfined, and confined but percolating matter-characterizing Yang-Mills matter at finite temperature and density. The latter can be thought of as the recently conjectured quarkyonic phase. We attempt an estimate of the critical Nc to see if the percolating phase can occur in our world. We find that, while percolation will not occur at normal nuclear density as in the large-N-c limit, a sliver of the phase diagram in N-c, energy density and baryonic density where percolation occurs while confinement persists is possible. We conclude by speculating on the phenomenological properties of such percolating quarkyonic matter and suggesting avenues by which to study it quantitatively and to look for it in experiment.

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