6533b86ffe1ef96bd12cdf00
RESEARCH PRODUCT
Probing spectral properties of the QGP with real-time lattice simulations
Jarkko PeuronTuomas LappiKirill BoguslavskiAleksi Kurkelasubject
PhysicsThermal equilibriumHigh Energy Physics - Lattice (hep-lat)Spectral propertieshep-latFOS: Physical sciencesParticle Physics - Latticehep-phhiukkasfysiikkaHigh Energy Physics - PhenomenologyHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)ThermalQuasiparticleSpectral functionStatistical physicsGauge theoryAutocatalytic reactionydinfysiikkaParticle Physics - Phenomenologydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-12-14 | Proceedings of International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions — PoS(HardProbes2018) |