A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Quantum and Classical Dynamics of Heavy Quarks in a Quark-Gluon Plasma (2019)

Escobedo Espinosa, M., & Blaizot, J.-P. (2019). Quantum and Classical Dynamics of Heavy Quarks in a Quark-Gluon Plasma. Nuclear Physics A, 982, 707-710. https://doi.org/10.1016/j.nuclphysa.2018.10.025

JYU-tekijät tai -toimittajat

Escobedo Espinosa, Miguel

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Escobedo Espinosa, Miguel; Blaizot, Jean-Paul

Lehti tai sarja: Nuclear Physics A

ISSN: 0375-9474

eISSN: 1873-1554

Julkaisuvuosi: 2019

Volyymi: 982

Lehden numero: 0

Artikkelin sivunumerot: 707-710

Kustantaja: Elsevier BV

Julkaisumaa: Alankomaat

Julkaisun kieli: englanti

DOI: https://doi.org/10.1016/j.nuclphysa.2018.10.025

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/62738

Lisätietoja: Special Issue: The 27th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2018 (Quark Matter 2018), 13-19 May 2018 • Lido di Venezia, Italy.

Tiivistelmä

Heavy quarkonium related observables are very useful to obtain information about the medium created in relativistic heavy ion collisions. In recent years the theoretical description of quarkonium in a medium has moved towards a more dynamical picture in which decay and recombination processes are very important. In this talk we will discuss the equations that describe the evolution of the heavy quark reduced density matrix in different approximations, highlighting the color dynamics that is absent in the Abelian case, and we will study their semi-classical limit. This will allow us to obtain stochastic equations (similar to Langevin or Boltzmann equations) that can be useful to obtain phenomenological predictions. We will observe that the region of validity of the Langevin-like or Boltzmann-like equations in QCD is much smaller than the corresponding QED case. The reason for this can be understood by studying how differently the free energy evolves in these two theories, and this observation will allow us to propose an equation with a small computational cost that captures many of the essential features of quarkonium evolution in a QCD plasma. These results are based on [J.-P. Blaizot, M. A. Escobedo, Quantum and classical dynamics of heavy quarks in a quark-gluon plasma, JHEP 06 (2018) 034. arXiv:1711.10812, doi:10.1007/JHEP06(2018)034; J.-P. Blaizot, M. A. Escobedo, The approach to equilibrium of a quarkonium in a quark-gluon plasma. arXiv:1803.07996].

YSO-asiasanat: hiukkasfysiikka; kvarkki-gluoniplasma

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