Hydrodynamic scales of integrable many-particle systems

H Spohn - arXiv preprint arXiv:2301.08504, 2023 - arxiv.org
The lecture notes cover the emergence of generalized hydrodynamics for the classical and
quantum Toda chain, the classical Calogero fluid, the Ablowitz-Ladik discretization of the …

[HTML][HTML] Piston driven shock waves in non-homogeneous planar media

M Krief - Physics of Fluids, 2023 - pubs.aip.org
In this work, we analyze in detail the problem of piston driven shock waves in planar media.
Similarity solutions to the compressible hydrodynamics equations are developed, for a …

Entropy growth during free expansion of an ideal gas

S Chakraborti, A Dhar, S Goldstein… - Journal of Physics A …, 2022 - iopscience.iop.org
To illustrate Boltzmann's construction of an entropy function that is defined for a microstate of
a macroscopic system, we present here the simple example of the free expansion of a one …

Hydrodynamic equations for the Toda lattice

H Spohn - arXiv preprint arXiv:2101.06528, 2021 - arxiv.org
1. Introduction, 2. Dynamics of the classical Toda lattice, 3. Static properties, 4. Mean-field
Dyson Brownian motion, 5. Hydrodynamics for hard rods, 6. Generalized hydrodynamic …

Dynamics of planar gas expansion during nanosecond laser evaporation into a low-pressure background gas

AA Morozov, VA Titarev - Physics of Fluids, 2022 - pubs.aip.org
A numerical study in a one-dimensional planar formulation of the dynamics of the neutral
gas expansion during nanosecond laser evaporation into a low-pressure background gas is …

Blast in a one-dimensional cold gas: from Newtonian dynamics to hydrodynamics

S Chakraborti, S Ganapa, PL Krapivsky, A Dhar - Physical Review Letters, 2021 - APS
A gas composed of a large number of atoms evolving according to Newtonian dynamics is
often described by continuum hydrodynamics. Proving this rigorously is an outstanding open …

Transient dynamics in the outflow of energy from a system in a nonequilibrium stationary state

PJ Żuk, K Makuch, R Hołyst, A Maciołek - Physical Review E, 2022 - APS
We investigate the thermal relaxation of an ideal gas from a nonequilibrium stationary state.
The gas is enclosed between two walls, which initially have different temperatures. After …

Boltzmann's entropy during free expansion of an interacting gas

S Chakraborti, A Dhar, A Kundu - Journal of Statistical Physics, 2023 - Springer
In this work, we study the evolution of Boltzmann's entropy in the context of free expansion of
a one-dimensional interacting gas inside a box. Our interacting particle model is a gas of …

Shock propagation in a driven hard sphere gas: molecular dynamics simulations and hydrodynamics

A Kumar, R Rajesh - arXiv preprint arXiv:2409.12086, 2024 - arxiv.org
The continuous injection of energy at a localized region in space in a stationary gas creates
a shock wave that propagates radially outwards. We study the hydrodynamics of this …

Chapman-Enskog theory for nearly integrable quantum gases

M Łebek, M Panfil - arXiv preprint arXiv:2410.23209, 2024 - arxiv.org
Integrable systems feature an infinite number of conserved charges and on hydrodynamic
scales are described by generalised hydrodynamics (GHD). This description breaks down …