Speaker
Description
The presentation is based on these works
1) Heavy Quark Entropy shift: From the Hadron Resonance Gas to Power Corrections
By E. Megias, E. Ruiz Arriola, L.L. Salcedo.
arXiv:1605.04453 [hep-ph].
2) Heavy quark-antiquark free energy and thermodynamics of string-hadron avoided crossings
By E. Megias, E. Ruiz Arriola, L.L. Salcedo.
arXiv:1603.04642 [hep-ph].
3) Heavy ${\bar Q}Q$ free energy from hadronic states
By E. Megías, E. Ruiz Arriola, L.L. Salcedo.
arXiv:1507.08606 [hep-ph].
10.1016/j.nuclphysbps.2016.02.034.
Nucl.Part.Phys.Proc. 93-97 270-272, Nucl.Part.Phys.Proc. 270-272 (2016) 170-174.
4) Quark properties from the Hadron Resonance Gas
By E. Ruiz Arriola, L.L. Salcedo, E. Megias.
arXiv:1505.02922 [hep-ph].
10.5506/APhysPolBSupp.8.439.
Acta Phys.Polon.Supp. 8 (2015) no.2, 439.
5) Quark Hadron Duality at Finite Temperature
By E. Ruiz Arriola, L.L. Salcedo, E. Megias.
arXiv:1410.3869 [hep-ph].
10.5506/APhysPolB.45.2407.
Acta Phys.Polon. B45 (2014) no.12, 2407-2454.
Summary
The correlation function between two Polyakov loops encodes the free-energy shift due to a pair of separated colour conjugated sources in the hot QCD vacuum. This is analyzed in terms of a novel K\"all\'en-Lehmann spectral representation for the separating distance, implying an increasing and concave free-energy at all temperatures. We express the heavy Q¯Q entropy shift below the phase transition in QCD in terms of colour neutral purely hadronic states with no explicit reference to quarks and gluons. Good agreement with lattice data is achieved when considering the avoided crossing mechanism underlying string breaking and with standard quenched values of the string tension known from charmonium and bottomonium phenomenology.
