Analytical attractor and the divergence of the slow-roll expansion in relativistic hydrodynamics

Autor(es)

Denicol, Gabriel S. ; Noronha, Jorge

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW D; v. 97, n. 5, p. 10-pg., 2018-03-26.

Resumo

We find the general analytical solution of the viscous relativistic hydrodynamic equations (in the absence of bulk viscosity and chemical potential) for a Bjorken expanding fluid with an ideal gas equation of state and a constant shear viscosity relaxation time. We analytically determine the hydrodynamic attractor of this fluid and discuss its properties. We show for the first time that the slow-roll expansion, a commonly used approach to characterize the attractor, diverges. This is shown to hold also in a conformal plasma. The gradient expansion is found to converge in an example where causality and stability are violated. (AU)

• Processo FAPESP: 15/50266-2 - Relativisitic heavy-ion collision dynamics: macroscopic approaches derived from microscopic physics
• Beneficiário: Jorge José Leite Noronha Junior
• Modalidade de apoio: Auxílio à Pesquisa - Regular