Speaker
Giorgio Torrieri
(JW Goethe Universitat, Frankfurt)
Description
We argue that a so far neglected dimensionless scale, the number of neighbors in a closely packed system (Nn, Nn~10 in our world), is relevant for the convergence of the large number of colors (Nc, Nc=3 in our world) expansion at large chemical potential.
Using a highly simplified but universal model, we demonstrate that the Nc$\gg$Nn limit is qualitatively different from our world's Nc$\ll$Nn. In particular, the relationship between deconfinement and percolation, and the in-medium modification of baryonic wavefunctions, are very different in these two regimes.
We explore phenomenological consequences of these findings, particularly in regard to the new "Quarkyonic" phases conjectured from large Nc arguments and the problem of chiral symmetry breaking at high chemical potential
Based on developments from Phys.Rev.C82:055202,2010
and http://arxiv.org/abs/1103.4824
Primary author
Giorgio Torrieri
(JW Goethe Universitat, Frankfurt)
Co-authors
Prof.
Igor Mishustin
(FIAS)
Dr
Stefano Lottini
(FIAS)
