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[Fizinfo] Ortvay kollokvium/Ortvay colloquium 04.12.2025

From: Kormányos Andor <andor.kormanyos AT ttk.elte.hu>
To: "ttk-fiz-faculty AT listbox.elte.hu" <ttk-fiz-faculty AT listbox.elte.hu>, "ttk-fiz-kutato AT listbox.elte.hu" <ttk-fiz-kutato AT listbox.elte.hu>, "ttk-fiz-emeritus AT listbox.elte.hu" <ttk-fiz-emeritus AT listbox.elte.hu>, "ttk-fiz-postdoc AT listbox.elte.hu" <ttk-fiz-postdoc AT listbox.elte.hu>, "ttk-fiz-phd-hallgatok AT listbox.elte.hu" <ttk-fiz-phd-hallgatok AT listbox.elte.hu>, "ttk-fiz-alkalmazottak AT listbox.elte.hu" <ttk-fiz-alkalmazottak AT listbox.elte.hu>, "fizinfo AT lists.kfki.hu" <fizinfo AT lists.kfki.hu>
Cc: "hirano AT sophia.ac.jp" <hirano AT sophia.ac.jp>
Subject: [Fizinfo] Ortvay kollokvium/Ortvay colloquium 04.12.2025
Date: Mon, 1 Dec 2025 09:42:47 +0000
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ELTE TTK Fizikai Intézet / ELTE Institute of Physics

ORTVAY KOLLOKVIUM / ORTVAY COLLOQUIUM
(https://physics.elte.hu/ortvayseminar)

Thursday, 4th December 2025, 15:00h.

Pócza Jenő Lecture Hall, Physics Building 1.71

Pázmány Péter sétány 1/A, 1117 Budapest

Tetsufumi Hirano

Sophia University, Tokio, Japan

The tiniest and hottest fluid: exploring the quark-gluon plasma
When two heavy nuclei collide at nearly the speed of light, they create an
extremely hot and dense state of matter — the quark–gluon plasma (QGP) —
where quarks and gluons move freely for a fleeting moment. Despite existing
only for about 10^{−23} seconds and within a volume smaller than an atomic
nucleus, this exotic medium behaves like an almost perfect fluid with
remarkably small viscosity. In this talk, I will explore how collective flow
phenomena emerge from such tiny and short-lived systems, what we have learned
about the fundamental properties of QCD matter, and how these findings
challenge our understanding of fluid dynamics at the smallest possible
scales.

Andor Kormányos

coordinator

[Fizinfo] Ortvay kollokvium/Ortvay colloquium 04.12.2025, Kormányos Andor, 12/01/2025