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)