High Energy Nuclear Physics Seminar- “Searching for the QCD critical point using Lee-Yang edge singularities” with Dr. David Clarke
Physics Seminar
April 3, 2024
11:00 AM - 12:00 PM
Location
SES 2214
Calendar
Download iCal FileSpeaker: Dr. David Clarke (University of Utah)
Title: Searching for the QCD critical point using Lee-Yang edge singularities
Abstract: Using Nf=2+1 QCD calculations at physical quark mass and purely imaginary baryon chemical potential, we locate Lee-Yang edge singularities in the complex chemical potential plane. These singularities have been obtained by the multi-point Padé approach applied to the net baryon number density. We recently showed that singularities extracted with this approach are consistent with the correct universal scaling near the Roberge-Weiss transition. Here we study the universal scaling of these singularities in the vicinity of the QCD critical endpoint. Making use of an appropriate scaling ansatz, we extrapolate these singularities on Nτ=6 and Nτ=8 lattices towards the real axis to estimate the position of a possible QCD critical point. We find an apparent approach toward the real axis with decreasing temperature.
Date posted
Feb 14, 2024
Date updated
Feb 14, 2024