NPA Seminar: Jamie Karthein, MIT, “Fluctuations of Conserved Charges for QCD Phase Diagram Characterization”

Fluctuations provide a powerful tool for elucidating the nature of strongly-interacting matter in the QCD phase diagram. In heavy-ion-collision systems, the net-particle number fluctuations are captured at the moment of chemical freeze-out. Studies of the chemical freeze-out via susceptibilities from Lattice QCD and the Hadron Resonance Gas model contribute to the characterization of the transition region of the QCD phase diagram. In this talk, I will show how susceptibilities can be used to constrain interactions in the hadron gas phase, to study the interplay between different conserved charges via cross-correlators, and to determine signatures of a potential critical point in the QCD phase diagram [1,2,3].
1. J. M. Karthein, V. Koch, C. Ratti, V. Vovchenko, Phys. Rev. D, 104, 094009 (2021)
2. R. Bellwied, S. Borsanyi et al, Phys. Rev. D, 101, 034506 (2020)
3. T. Dore, J.M. Karthein, D. Mroczek et al, Phys. Rev. D (accepted), arXiv:2207.04086
There will be a luncheon with the speaker from 12-1 p.m. in WL-216. Lunch will be provided for people on a first-come, first-served basis for people who RSVP by Tuesday, November 9th: https://tinyurl.com/npa-signup
Host: Fernando Flor (fernando.flor@yale.edu)