24-30 July 2016
Highfield Campus, University of Southampton
Europe/London timezone

The Roberge-Weiss endpoint in $N_f=2+1$ QCD at the physical point

25 Jul 2016, 18:05
20m
Building 32 Room 1015 (Highfield Campus, University of Southampton)

Building 32 Room 1015

Highfield Campus, University of Southampton

Talk Nonzero Temperature and Density Nonzero Temperature and Density

Speaker

Mr Michele Mesiti (University of Pisa and INFN - Sezione di Pisa)

Description

In this talk I will report on our recent results about the determination of the position and the nature of the Roberge-Weiss endpoint. Our study is performed in $N_f=2+1$ QCD, with physical quark masses, making use of stout-improved staggered fermions and of the tree level Symanzik improvement for the gauge action. We study the theory at 4 different lattice spacings, corresponding to $N_t=4,6,8$ and $10$, and at different spatial sizes. The finite size scaling analysis performed on $N_t=4$ and $6$ lattices indicates that the Roberge-Weiss transition at the endpoint is of the 2nd order kind, in the 3D Ising universality class, while the continuum limit of the critical temperature is found to be $T_{RW}=208(5)$ MeV.

Primary authors

Dr Claudio Bonati (Università di Pisa) Dr Francesco Negro (Universita' di Pisa and INFN - Sezione di Pisa) Dr Francesco Sanfilippo (University of Southampton) Dr Marco Mariti (Univesita' di Pisa and INFN - Sezione di Pisa) Prof. Massimo D'Elia (Universita' di Pisa and INFN - Sezione di Pisa) Mr Michele Mesiti (University of Pisa and INFN - Sezione di Pisa)

Presentation Materials