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

Autor(es)

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

Afiliação do(s) autor(es)

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

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

• Tipo de documento: Artigo Científico
• Fonte: Physical Review Letters; v. 115, n. 20 NOV 11 2015.
• Citações Web of Science: 35
• Assunto(s): Física nuclear Cromodinâmica quântica Colisões

Resumo

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)

• Processo FAPESP: 13/04036-0 - Cálculo das propriedades do plasma de quarks e glúons a temperatura e densidade bariônica finitas via holografia
• Beneficiário: Rômulo Cesar Rougemont Pereira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado