243 citations · 1.3k across the 43 of their papers we have counts for
31 papers · 1 filter
Condensation and prescaling in spatial Polyakov loop correlations far from equilibrium
Daniel Spitz, Kirill Boguslavski, Thimo Preis
The far-from-equilibrium dynamics of spatial Polyakov loop correlations, which provide gauge-invariant observables akin to effective particle numbers for gluon plasmas, are investi…
Soft-gluon exchange matters: isotropic screening in QCD kinetic theory
Kirill Boguslavski, Florian Lindenbauer
QCD kinetic theory simulations are a prominent tool for studying the nonequilibrium initial stages in heavy-ion collisions. Despite their success, all implementations rely on appro…
Heavy-quark diffusion in 2+1D and Glasma-like plasmas: evidence of a transport peak
Liane Backfried, Kirill Boguslavski, Paul Hotzy
We examine how plasma excitations affect the heavy-quark diffusion coefficient in 2+1 dimensional and Glasma-like plasmas, akin to the pre-equilibrium matter describing relativisti…
Limiting attractors in heavy-ion collisions -- the interplay between bottom-up and hydrodynamic attractors
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
In this contribution to the Quark Matter 2023 proceedings, we study the hydrodynamization process in heavy-ion collisions using QCD kinetic theory and introduce the new concept of…
Heavy quark momentum diffusion coefficient during hydrodynamization via effective kinetic theory
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
In these proceedings, we compute the heavy quark momentum diffusion coefficient using QCD effective kinetic theory for a plasma going through the bottom-up thermalization scenario…
Limiting attractors in heavy-ion collisions
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
We study universal features of the hydrodynamization process in heavy-ion collisions using QCD kinetic theory simulations for a wide range of couplings. We introduce the new concep…
Jet quenching parameter in QCD kinetic theory
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
We study the jet quenching parameter in a non-equilibrium plasma using the QCD effective kinetic theory. We discuss subleading terms at large jet momentum p, show that our…
Heavy quark diffusion coefficient during hydrodynamization -- non-equilibrium vs. equilibrium
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
We compute the heavy quark momentum diffusion coefficient using effective kinetic theory for a system going through bottom-up isotropization until approximate hydrodynamization. We…
Order parameters for gauge invariant condensation far from equilibrium
Jürgen Berges, Kirill Boguslavski, Lillian de Bruin +2
Nuclear collisions at sufficiently high energies are expected to produce far-from-equilibrium matter with a high density of gluons at early times. We show gauge condensation, which…
Jet momentum broadening during initial stages in heavy-ion collisions
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
We study the jet quenching parameter in the initial pre-equilibrium stages of heavy-ion collisions using the QCD kinetic theory description of the anisotropic quark-gluon…
Heavy quark diffusion coefficient in heavy-ion collisions via kinetic theory
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +2
We compute the heavy quark momentum diffusion coefficient using QCD kinetic theory for a system going through bottom-up isotropization in the initial stages of a heavy ion coll…
Probing universal dynamics with topological data analysis in a gluonic plasma
Daniel Spitz, Kirill Boguslavski, Jürgen Berges
We study nonequilibrium dynamics of SU(2) lattice gauge theory in Minkowski space-time in a classical-statistical regime, where characteristic gluon occupancies are much larger tha…
Fermion and gluon spectral functions far from equilibrium
Kirill Boguslavski, Tuomas Lappi, Sören Schlichting
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…
Spectral function of fermions in a highly occupied non-Abelian plasma
Kirill Boguslavski, Tuomas Lappi, Mark Mace +1
We develop a method to obtain fermion spectral functions non-perturbatively in a non-Abelian gauge theory with high occupation numbers of gauge fields. After recovering the free fi…
The imaginary part of the heavy-quark potential from real-time Yang-Mills dynamics
Kirill Boguslavski, Babak S. Kasmaei, Michael Strickland
We extract the imaginary part of the heavy-quark potential using classical-statistical simulations of real-time Yang-Mills dynamics in classical thermal equilibrium. The -depend…
Broad excitations in a 2+1D overoccupied gluon plasma
K. Boguslavski, A. Kurkela, T. Lappi +1
Motivated by the initial stages of high-energy heavy-ion collisions, we study excitations of far-from-equilibrium 2+1 dimensional gauge theories using classical-statistical lattice…
Heavy quark diffusion in an overoccupied gluon plasma
K. Boguslavski, A. Kurkela, T. Lappi +1
We extract the heavy-quark diffusion coefficient κand the resulting momentum broadening <p^2> in a far-from-equilibrium non-Abelian plasma. We find several features in the time dep…
Heavy quark momentum diffusion coefficient in 3D gluon plasma
K. Boguslavski, A. Kurkela, T. Lappi +1
We study the heavy-quark momentum diffusion coefficient in far from equilibrium gluon plasma in a self-similar regime using real-time lattice techniques. We use 3 methods for the e…
Unraveling the nature of universal dynamics in theories
K. Boguslavski, A. Piñeiro Orioli
Many-body quantum systems far from equilibrium can exhibit universal scaling dynamics which defy standard classification schemes. Here, we disentangle the dominant excitations in t…
Gauge-invariant condensation in the nonequilibrium quark-gluon plasma
Jürgen Berges, Kirill Boguslavski, Mark Mace +1
The large density of gluons, which is present shortly after a nuclear collision at very high energies, can lead to the formation of a condensate. We identify a gauge-invariant orde…
Probing spectral properties of the QGP with real-time lattice simulations
Kirill Boguslavski, Aleksi Kurkela, Tuomas Lappi +1
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) spe…
Understanding the dynamics of field theories far from equilibrium
Kirill Boguslavski
In recent years, there have been important advances in understanding the far-from-equilibrium dynamics in different physical systems. In ultra-relativistic heavy-ion collisions, th…
Spectral function for overoccupied gluodynamics from real-time lattice simulations
K. Boguslavski, A. Kurkela, T. Lappi +1
We study the spectral properties of a highly occupied non-Abelian non-equilibrium plasma appearing ubiquitously in weak coupling descriptions of QCD matter. The spectral function o…
Large-N kinetic theory for highly occupied systems
R. Walz, K. Boguslavski, J. Berges
We consider an effective kinetic description for quantum many-body systems, which is not based on a weak-coupling or diluteness expansion. Instead, it employs an expansion in the n…