6 papers
Kelvin waves in nonequilibrium universal dynamics of relativistic scalar field theories
Viktoria Noel, Thomas Gasenzer, Kirill Boguslavski
We investigate the different degrees of freedom underlying far-from-equilibrium scaling behaviour in a relativistic, single-component scalar field theory in two and…
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…
Lefschetz thimble-inspired weight regularizations for complex Langevin simulations
Kirill Boguslavski, Paul Hotzy, David I. Müller
Complex Langevin (CL) is a computational method to circumvent the numerical sign problem with applications in finite-density quantum chromodynamics and the real-time dynamics of qu…
Real-time correlators in 3+1D thermal lattice gauge theory
Kirill Boguslavski, Paul Hotzy, David I. Müller
We present the first direct ab-initio computation of unequal-time correlation functions in non-Abelian lattice gauge theory. We demonstrate non-trivial consistency relations among…
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…
Designing weight regularizations based on Lefschetz thimbles to stabilize complex Langevin
Kirill Boguslavski, Paul Hotzy, David I. Müller
The complex Langevin (CL) method shows significant potential in addressing the numerical sign problem. Nonetheless, it often produces incorrect results when used without any stabil…