Core-U セミナー: 赤松 幸尚氏
- Speaker: 赤松 幸尚氏
- Date: 11/18水 15:00-16:30 ハイブリッド: 経済学部棟B155 + teams
- Title: Alternative Signals for the QCD Critical Point
概要:
Understanding the properties of strongly interacting matter is essential for exploring a wide range of physical phenomena, from the early Universe to neutron stars. However, the QCD phase diagram remains far from fully understood. Theoretical calculations suggest the existence of a QCD critical point, and relativistic heavy-ion collision experiments are being conducted to search for its signatures. So far, experimental searches have primarily focused on fluctuations of conserved quantities. However, available experimental data have not yet provided conclusive evidence for the critical point.
In this seminar, I will present two studies that aim to identify signatures of the critical point through observables other than fluctuations of conserved quantities. The first study investigates the scaling behavior of the heavy-quark diffusion coefficient arising from the coupling between heavy quarks and critical fluctuations [1]. The second study focuses on the electric charge carried by critical fluctuations and explores the enhancement of photon production and scaling behavior in the photon spectrum [2].
[1] Akamatsu, Asakawa, Phys. Rev. C109 (2024) L031901
[2] Akamatsu, Asakawa, Hongo, Stephanov, Yee, Phys. Rev. D113 (2026) 034009