Heavy quark diffusion in an overoccupied gluon plasma
Boguslavski, K., Kurkela, A., Lappi, T., & Peuron, J. (2020). Heavy quark diffusion in an overoccupied gluon plasma. Journal of High Energy Physics, 2020(9), Article 77. https://doi.org/10.1007/jhep09(2020)077
Julkaistu sarjassa
Journal of High Energy PhysicsPäivämäärä
2020Tekijänoikeudet
© The Authors. Article funded by SCOAP3
We extract the heavy-quark diffusion coefficient κ and the resulting momentum broadening 〈p2〉 in a far-from-equilibrium non-Abelian plasma. We find several features in the time dependence of the momentum broadening: a short initial rapid growth of 〈p2〉, followed by linear growth with time due to Langevin-type dynamics and damped oscillations around this growth at the plasmon frequency. We show that these novel oscillations are not easily explained using perturbative techniques but result from an excess of gluons at low momenta. These oscillation are therefore a gauge invariant confirmation of the infrared enhancement we had previously observed in gauge-fixed correlation functions. We argue that the kinetic theory description of such systems becomes less reliable in the presence of this IR enhancement.
Julkaisija
SpringerISSN Hae Julkaisufoorumista
1126-6708Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/42071377
Metadata
Näytä kaikki kuvailutiedotKokoelmat
Rahoittaja(t)
Euroopan komissio; Suomen AkatemiaRahoitusohjelmat(t)
Akatemiahanke, SA
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Lisätietoja rahoituksesta
T. L. is supported by the Academy of Finland, project No. 321840.This work is supported by the European Research Council, grant ERC-2015-CoG-681707.Lisenssi
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