Starts 28 May 2026 16:00
Ends 28 May 2026 17:00
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HECAP Seminar by Ashish Shukla - Models for Heavy-Ion Collisions and Carroll Hydrodynamics
Hybrid
Leonardo Building - Lagrange Lecture Hall and via Zoom
Abstract
The study of quark-gluon plasma (QGP) and its properties is of fundamental significance to the understanding of the strong interactions. Heavy-ion collision experiments have shown that the QGP behaves like a nearly perfect fluid for part of its evolution before eventual hadronization. Using approximate symmetries, such as the boost invariance of the flow along the beam axis, the hydrodynamic behaviour of the QGP can be studied via simple models such as Bjorken and Gubser flow. In this talk, I will present the idea that these simple models are actually realizations of what has come to be known as "Carroll hydrodynamics," which describes the hydrodynamic behaviour of systems with an underlying Carroll boost invariance. In particular, the geometric properties of the Carroll manifold map to the phenomenological assumptions that are built into these models. The mapping between the two is not limited to ideal fluids, and also works after including dissipative corrections.
The study of quark-gluon plasma (QGP) and its properties is of fundamental significance to the understanding of the strong interactions. Heavy-ion collision experiments have shown that the QGP behaves like a nearly perfect fluid for part of its evolution before eventual hadronization. Using approximate symmetries, such as the boost invariance of the flow along the beam axis, the hydrodynamic behaviour of the QGP can be studied via simple models such as Bjorken and Gubser flow. In this talk, I will present the idea that these simple models are actually realizations of what has come to be known as "Carroll hydrodynamics," which describes the hydrodynamic behaviour of systems with an underlying Carroll boost invariance. In particular, the geometric properties of the Carroll manifold map to the phenomenological assumptions that are built into these models. The mapping between the two is not limited to ideal fluids, and also works after including dissipative corrections.