3 papers
cond-mat.stat-mech2026
Crossover from generalized to conventional hydrodynamics in nearly integrable systems under relaxation time approximation
Saikat Santra, Maciej Łebek, Miłosz Panfil
Upon breaking the integrability, the equations of generalized hydrodynamics (GHD) are supplemented by a Boltzmann collision term. Such terms are typically complicated and stem from…
cond-mat.stat-mech2026
Burgers equation from non-thermal stationary states in nearly-integrable gases
Paweł Lisiak, Maciej Łebek, Miłosz Panfil
When a gas of particles interacts with much a larger reservoir the density dynamics on large scales is typically governed by diffusion. We study this paradigmatic problem for weakl…
cond-mat.stat-mech2024
Generalised BBGKY hierarchy for near-integrable dynamics
Leonardo Biagetti, Maciej Lebek, Milosz Panfil +1
We study quantum and classical many-body Hamiltonian systems that combine integrable contact interactions with generic long-range two-body potentials. Starting from an ansatz for t…