Fermion and gluon spectral functions far from equilibrium
Boguslavski, K., Lappi, T., & Schlichting, S. (2022). Fermion and gluon spectral functions far from equilibrium. In A. Rothkopf, J. Andersen, A. Kurkela, D. Röhrich, L. Tolos, A. Tranberg, & K. Tywoniuk (Eds.), vConf21 : A Virtual Tribute to Quark Confinement and the Hadron Spectrum (258, pp. 05003). EDP Sciences. EPJ Web of Conferences. https://doi.org/10.1051/epjconf/202225805003
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EPJ Web of ConferencesEditors
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2022Copyright
© The Authors, published by EDP Sciences
Motivated by the quark-gluon plasma, we develop a simulation method to obtain the spectral function of (Wilson) fermions non-perturbatively in a non-Abelian gauge theory with large gluon occupation numbers [1]. We apply our method to a non-Abelian plasma close to its non-thermal fixed point, i.e., in a far-from-equilibrium self-similar regime, and find mostly very good agreement with perturbative hard loop (HTL) calculations. For the first time, we extract the full momentum dependence of the damping rate of fermionic collective excitations and compare our results to recent non-perturbative extractions of gluonic spectral functions in two and three spatial dimensions [2, 3].
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EDP SciencesConference
A Virtual Tribute to Quark Confinement and the Hadron SpectrumIs part of publication
vConf21 : A Virtual Tribute to Quark Confinement and the Hadron SpectrumISSN Search the Publication Forum
2101-6275Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/104062809
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Related funder(s)
European Commission; Research Council of FinlandFunding program(s)
RIA Research and Innovation Action, H2020; Academy Project, AoF
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.
Additional information about funding
K.B. would like to acknowledge support by the Austrian Science Fund (FWF) under project P 34455-N. The authors are grateful to A. Kurkela, M. Mace and J. Peuron for collaboration and discussions. The authors wish to acknowledge the National Energy Research Scientific Computing Center, a U.S. Department of Energy Office of Science User Facility supported under Contract No. DE-AC02-05CH11231, the CSC - IT Center for Science, Finland, and the Vienna Scientific Cluster (VSC, Austria) under the project number 71444 for computational resources.⇤⇤T.L. is supported by the Academy of Finland, project 321840 and under the European Union’s Horizon 2020 research and innovation programme by the European Research Council (ERC, grant agreement No. ERC-2015- CoG-681707) and by the STRONG-2020 project (grant agreement No 824093). The content of this article does not reflect the official opinion of the European Union and responsibility for the information and views expressed therein lies entirely with the authors.⇤⇤⇤S.S. is supported by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through the CRC-TR 211 “Strong-interaction matter under extreme conditions” Project number 315477589. ...License
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