Towards the quark-gluon plasma Equation of State with dynamical strange and charm quarks

15th International Conference on Strangeness in Quark Matter

Burger, Florian^1 ; Ilgenfritz, Ernst-Michael^2 ; Lombardo, Maria Paola^4 ; Müller-Preussker, Michael^1 ; Trunin, Anton^2,3

Physics Department, Humboldt University Berlin, Newtonstr. 15, Berlin

12489, Germany^1

Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Joliot-Curie Str. 6, Dubna

141980, Russia^2

Samara State Aerospace University, Moskovskoye Shosse 34, Samara

443086, Russia^3

Frascati National Laboratory, National Institute for Nuclear Physics, Via Enrico Fermi 40, Frascati (Rome)

00044, Italy^4

关键词: Charm quark mass;    Charm quarks;    Dynamical quarks;    Lattice QCD;    Lattice scale;    Pseudo-critical temperature;    Quark-gluon plasma;    Thermodynamic equations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/668/1/012092/pdf
DOI  :  10.1088/1742-6596/668/1/012092

来源: IOP

【 摘 要 】

We present an ongoing project aimed at determining the thermodynamic Equation of State (EoS) of quark-gluon matter from lattice QCD with two generations of dynamical quarks. We employ the Wilson twisted mass implementation for the fermionic fields and the improved Iwasaki gauge action. Relying on T = 0 data obtained by the ETM Collaboration the strange and charm quark masses are fixed at their physical values, while the pion mass takes four values in the range from 470 MeV down to 210 MeV. The temperature is varied within a fixed-lattice scale approach. The values for the pseudocritical temperature are obtained from various observables. For the EoS we show preliminary results for the pure gluonic contribution obtained at the pion mass value 370 MeV, where we can compare with previously obtained results with Nf= 2 degenerate light flavours.