Speaker
Giorgio Torrieri
(JW Goethe Universitat, Frankfurt)
Description
I will discuss the phase structure of matter at moderate temperature
and chemical potential, relevant for the lower energy runs at RHIC as
well as the upcoming experiments of NICA and FAIR.
Motivated by large Nc physics, I will argue that the non-perturbative structure of QCD can give rise to hitherto little explored phenomena, such as the coexistence of confinement with perturbative quark degrees of freedom. I will however show that this "quarkyonic phase" is defined by a percolation-type phase transition line which curves in "number of colors", as well as density and temperature.
Given theoretical uncertainities in dealing with matter at this regime, therefore, a phenomenological and experimental investigation
of matter at high chemical potential might be decisive to determine if the quarkyonic phase does in fact exist.
I will discuss possible experimental signatures of this new state of matter,concentrating on electromagnetic signals as well as strangeness enhancement.
Summary
Based on Phys.Rev.Lett. 107 (2011) 152301
and developments of this work, arXiv:1204.3272 and arXiv:1302.1119
Author
Giorgio Torrieri
(JW Goethe Universitat, Frankfurt)
