https://doi.org/10.1140/epjc/s10052-023-11557-0
Regular Article - Theoretical Physics
Thermodynamics of the glueball resonance gas
1
Institute of Physics, Jan Kochanowski University, ul. Uniwersytecka 7, 25-406, Kielce, Poland
2
Institute for Theoretical Physics, J. W. Goethe University, Max-von-Laue-Str. 1, 60438, Frankfurt, Germany
Received:
16
March
2023
Accepted:
26
April
2023
Published online:
10
May
2023
We study the thermodynamic properties – pressure, entropy and trace anomaly – of a gas of glueballs that includes the glueball states obtained by various lattice simulations. We show that this model, called glueball resonance gas (GRG) approach, describes well the thermal properties of the Yang–Mills sector of QCD below the critical temperature 
, provided that is properly matched to the corresponding determination of the glueball masses, obtaining 
MeV. The inclusion into the GRG of heavier glueballs not yet seen on the lattice, assuming that glueballs follow Regge trajectories as quark-antiquark states do, leads only to a small correction. We consider the contribution to the pressure of the interactions between scalar-scalar and tensor-tensor glueballs, which turn out to be also negligible.
© The Author(s) 2023
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