RIKEN Lunch Seminar

"Modification of the nucleon-nucleon potential and nuclear correlations due to the QCD critical point"

Presented by Juan M. Torres-Rincon, Stony Brook University

Thursday, February 7, 2019, 12:00 pm — Building 510, Room 2-160

The scalar-isoscalar mode of QCD becomes lighter/nearly massless close to the chiral transition/second-order critical point. This mode is the main responsible for the attractive part of the nucleon-nucleon potential at distances of 1-2 fm. Therefore, a long-range strong attraction among nucleons is predicted to develop close to the QCD critical point. Using the Walecka-Serot model for the NN potential we study the effects of the critical mode in a system of nucleons and mesons using a Molecular Dynamics+Langevin equations for the freeze-out conditions of heavy-ion collisions. Beyond mean field, we observe strong nucleon correlations leading to baryon clustering. We propose that light-nuclei formation, together with an enhancement of cumulants of the proton distribution can signal the presence of the QCD critical point.

Hosted by: Enrico Rinaldi

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