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Diffusions dynamics of fluctuations of conserved charges 

Speaker: Prof. Masakiyo Kitazawa (Osaka University)

Time: Sep 8(Tuesday) 10:00am (New York), 7:00am (San Fransisco), 4:00pm (Frankfurt) 7:30pm(New Delhi), 10:00pm (Beijing), 11:00pm (Tokyo)


Fluctuations of conserved charges are important observables in relativistic heavy-ion collisions. They are believed to carry significant amount of information on the hot medium created by the collisions, and are sensitive to QCD phase structure. In particular, their higher order cumulants characterizing  non-Gaussian nature are considered to be observables suitable for the search for the QCD critical point. Active studies have been done recently experimentally, theoretically, and also on the lattice. In this talk, I will first give a pedagogical introduction to the physics of fluctuations, and discuss why fluctuation observables are suitable for experimental search for the QCD phase structure. I will then discuss various difficulties that arise when comparing experimentally-observed fluctuations with theoretical predictions and lattice results. I will especially focus on the importance of the dynamical evolution of fluctuations. Several attempts to understand the dynamics of fluctuations from the experimental data, especially from their rapidity-window dependence will be discussed.

Chair: Masayuki Asakawa

ZOOM link: Please register here, the ZOOM link will be send in the comming Monday by group email. By attending this event you agree to the seminar and discussion being recorded and posted on the seminar web site.

Starts Sep 8, 2020 22:00
Ends Sep 8, 2020 23:30