Suppression of Baryon Diffusion and Transport in a Baryon Rich Strongly Coupled Quark-Gluon Plasma

Author(s)

Rougemont, Romulo ^[1] ; Noronha, Jorge ^{[1, 2]} ; Noronha-Hostler, Jacquelyn ^[2]

Affiliation

^[1] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP - Brazil

^[2] Columbia Univ, Dept Phys, New York, NY 10027 - USA

• Document type: Journal article
• Source: Physical Review Letters; v. 115, n. 20 NOV 11 2015.
• Web of Science Citations: 35

Abstract

Five dimensional black hole solutions that describe the QCD crossover transition seen in (2 + 1)-flavor lattice QCD calculations at zero and nonzero baryon densities are used to obtain predictions for the baryon susceptibility, baryon conductivity, baryon diffusion constant, and thermal conductivity of the strongly coupled quark-gluon plasma in the range of temperatures 130 MeV <= T <= 300 MeV and baryon chemical potentials 0 <= mu(B) <= 400 MeV. Diffusive transport is predicted to be suppressed in this region of the QCD phase diagram, which is consistent with the existence of a critical end point at larger baryon densities. We also calculate the fourth-order baryon susceptibility at zero baryon chemical potential and find quantitative agreement with recent lattice results. The baryon transport coefficients computed in this Letter can be readily implemented in state-of-the-art hydrodynamic codes used to investigate the dense QGP currently produced at RHIC's low energy beam scan. (AU)

• FAPESP's process: 13/04036-0 - Computation of the properties of the quark-gluon plasma at nonzero temperature and baryonic density using the holographic correspondence
• Grantee: Rômulo Cesar Rougemont Pereira
• Support type: Scholarships in Brazil - Post-Doctorate