Causality of fluid dynamics for high-energy nuclear collisions

• Verfasst von: Flörchinger, Stefan [VerfasserIn]
• Verfasst von: Grossi, Eduardo [VerfasserIn]
• Titel: Causality of fluid dynamics for high-energy nuclear collisions
• Verf.angabe: Stefan Floerchinger and Eduardo Grossi
• E-Jahr: 2017
• Jahr: 17 Nov 2017
• Umfang: 27 S.
• Fussnoten: Identifizierung der Ressource nach: Last revised 22 May 2018 ; Gesehen am 16.12.2020
• Titel Quelle: Enthalten in: De.arxiv.org
• Ort Quelle: [S.l.] : Arxiv.org, 1991
• Jahr Quelle: 2017
• Band/Heft Quelle: (2017) Artikel-Nummer 1711.06687, 27 Seiten
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: High Energy Physics - Phenomenology
• Sach-SW: Nuclear Theory
• K10plus-PPN: 157063629X

Abstract

Dissipative relativistic fluid dynamics is not always causal. We discuss the causality structure of high energy nuclear collision. When the fluid evolution equations are hyperbolic, one can bring them to a characteristic form describing the radial expansion of a fireball. This dynamics is causal if the characteristic velocities are smaller than the speed of light. We obtain a concrete inequality from this constraint and discuss how it can be violated for certain initial conditions. We argue that causality poses a bound to the applicability of relativistic fluid dynamics.