A4 Article in conference proceedings
Probing spectral properties of the QGP with real-time lattice simulations (2019)

Boguslavski, K., Kurkela, A., & Lappi, T. P. (2019). Probing spectral properties of the QGP with real-time lattice simulations. In D. d'Enterria, A. Morsch, & P. Crochet (Eds.), Hard Probes 2018 : International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Article 057). Sissa Medialab srl. POS Proceedings of Science, 345. https://doi.org/10.22323/1.345.0057

JYU authors or editors

Publication details

All authors or editors: Boguslavski, K.; Kurkela, A.; Lappi, T. Peuron, J.

Parent publication: Hard Probes 2018 : International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions

Parent publication editors: d'Enterria, David; Morsch, Andreas; Crochet, Philippe

Conference:

Place and date of conference: Aix-les-Bains, France, 1.-5.10.2018

Journal or series: POS Proceedings of Science

eISSN: 1824-8039

Publication year: 2019

Number in series: 345

Article number: 057

Publisher: Sissa Medialab srl

Publication country: Italy

Publication language: English

DOI: https://doi.org/10.22323/1.345.0057

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/65910

Publication is parallel published: https://arxiv.org/abs/1812.06106

Abstract

We present a new method to obtain spectral properties of a non-Abelian gauge theory in the region where occupation numbers are high. The method to measure the (single-particle) spectral function is based on linear response theory and classical-statistical lattice simulations. Although we apply it to a system far from equilibrium in a self-similar regime, the extracted spectral function can be understood within the hard thermal loop (HTL) formalism and can thus be connected to thermal equilibrium at high temperatures. This allows us to obtain quantities like the lifetime of quasiparticles that are beyond the leading order and difficult to compute within HTL. The approach has the potential to measure transport coefficients, to study the earliest stages of heavy-ion collisions in a controlled way and it can be employed beyond the range of validity of HTL.

Keywords: particle physics; nuclear physics

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Ministry reporting: Yes

Reporting Year: 2019

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