ydrodynamization times of a holographic fluid far from equilibriu

Autor(es)

Rougemont, Romulo ^[1] ; Barreto, Willians ^{[2, 3]} ; Noronha, Jorge ^[4]

Afiliação do(s) autor(es)

^[1] Univ Estado Rio de Janeiro, Dept Fis Teor, Rua Sao Francisco Xavier 524, BR-20550013 Maracana, RJ - Brazil

^[2] Univ Fed ABC, Ctr Ciencias Nat & Humans, Av Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[3] Univ Los Andes, Ctr Fis Fundamental, Merida 5101 - Venezuela

^[4] Univ Illinois, Illinots Ctr Adv Studies Universe, Dept Phys, Urbana, IL 61801 - USA

• Tipo de documento: Artigo Científico
• Fonte: PHYSICAL REVIEW A; v. 105, n. 4 FEB 14 2022.
• Citações Web of Science: 0

Resumo

We investigate several hydrodynamization times for an ensemble of different far-from-equilibrium solutions of the strongly coupled N = 4 supersymmetric Yang-Mills plasma undergoing Bjorken flow. For the ensemble of initial data analyzed in the present work, we find that, with typical tolerances between 3% to 5%, the average hydrodynamization time associated with the late time convergence of the pressure anisotropy to the corresponding Borel resummed hydrodynamic attractor is approximately equal to the average hydrodynamization time associated with the Navier-Stokes result, while both are shorter than the average hydrodynamization time associated with second-order hydrodynamics. On the other hand, we find that the entropy density of the different solutions coalesces to second-order hydrodynamics long before entering in the Navier-Stokes regime. A clear hierarchy between the different average hydrodynamization times of the Bjorken expanding fluid is established for the set of analyzed initial data, comprising also some solutions which, whilst satisfying the dominant and the weak energy conditions at the initial time, evolve such as to transiently violate one or both conditions when the fluid is still far from equilibrium. In particular, solutions violating the weak energy condition are generally found to take a longer time to enter in the hydrodynamic regime than the other solutions. (AU)

• Processo FAPESP: 17/05685-2 - Física hadrônica em colisões nucleares de altas energias
• Beneficiário: Jun Takahashi
• Modalidade de apoio: Auxílio à Pesquisa - Projetos Especiais