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SUMMARY:Andreas Kirchner\, "Studying hard probe thermalization in QGP usin
 g heavy quark-hydro effective field theory"
DTSTART:20261005T140000Z
DTEND:20261005T160000Z
DTSTAMP:20261021T160700Z
UID:indico-event-1734912@indico.cern.ch
DESCRIPTION:Speakers: Andreas Kirchner\n\nThe description of heavy quarks 
 inside the QGP medium\, especially at low momenta\, remains challenging fr
 om first principles\, due to large coupling strength and gluon occupation 
 numbers. An alternative way to formulate a description in terms of perturb
 ative degrees of freedom is the interaction of the heavy quarks with the c
 ollective excitations of the medium in form of phonons. This description i
 s derived as an effective field theory (EFT) and therefore allows for a na
 tural occurring power counting of the allowed interactions. This EFT has a
 lready been established in our previous work (arXiv:2510.13942)\, where we
  have derived the phonon-heavy quark interactions and calculated their the
 rmal scattering cross section. We use these results to study the heavy qua
 rk thermalization process from different aspects\, beginning with the calc
 ulation of the heavy quark drag coefficient in the medium. We also solve t
 he Boltzmann equation for the heavy quark distribution and demonstrate a w
 ake signal in the phonon distribution.\n\nhttps://indico.cern.ch/event/173
 4912/
LOCATION:4/2-037 - TH meeting room (CERN)
URL:https://indico.cern.ch/event/1734912/
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