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On the QCD phase structure from Functional Methods  

Speaker: Jan M. Pawlowski (Heidelberg U.)

Time: Nov. 17(Tuesday) 9:00am (New York), 6:00am (San Fransisco), 3:00pm (Frankfurt) 7:30pm(New Delhi), 10:00pm (Beijing), 11:00pm (Tokyo)

Abstract:

    In the past decade the functional approach to 1st principles QCD has made rapid advances. By now the results for the chiral crossover temperature and observables such as quark condensates agree quantitatively with the respective lattice results for vanishing and low baryon chemical potential mu_B. The large chemical potential regime interesting for BES is notoriously difficult to resolve within QCD. While lattice simulations suffer from the sign problem for chemical potentials mu_B/T> 2-3, functional approaches are still qualitatively reliable in this regime, but face a rapidly increasing systematic error within the current approximations.

    In the present talk I give an overview of the current state of the art of 1st principles functional approaches (functional renormalisation group, Dyson-Schwinger equations) to the phase structure of QCD at BES-densities. The location of the chiral phase boundary at larger chemical potential and that of the potential critical end point as well as potential signatures in terms of fluctuations observables are discussed. It is argued that the systematic improvements may allow for quantitative predictions at large densities within the next few years.

Chair: Kenji Fukushima

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.

Materials:

Material link:https://pan.baidu.com/s/1pjMjEX9RFGbQ5Vwie7XbQg
passcode:phys

Onedrive link: https://1drv.ms/u/s!AmB8n-ZfDQtKgwNxTqg7Zh66a_6I?e=mHwQLZ

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Asia/Shanghai