My latest arXiv preprints
2025
A microscopically reversible kinetic theory of flocking
Authors: Ruben Lier
Originally submitted: 12 Aug 2025
On the temperature of an active nematic
Authors: Jay Armas, Akash Jain, Ruben Lier
Originally submitted: 25 Jun 2025
Resistive relativistic magnetohydrodynamics without Amperes Law
Authors: Ruben Lier, Akash Jain, Jay Armas, Oliver Porth
Originally submitted: 8 Jan 2025
2024
Odd viscous flow past a sphere at low but nonzero Reynolds numbers
Authors: Ruben Lier
Originally submitted: 26 May 2024
Hydrodynamics of thermal active matter
Authors: Jay Armas, Akash Jain, Ruben Lier
Originally submitted: 17 May 2024
Holographic transport in anisotropic plasmas
Authors: Tuna Demircik, Domingo Gallegos, Umut Gürsoy, Matti Järvinen, Ruben Lier
Originally submitted: 19 Feb 2024
Topological plasma oscillations in the solar tachocline
Authors: Ruben Lier, Richard Green, Jan de Boer, Jay Armas
Originally submitted: 15 Jan 2024
2023
A Novel Method for Holographic Transport
Authors: Tuna Demircik, Domingo Gallegos, Umut Gürsoy, Matti Järvinen, Ruben Lier
Originally submitted: 31 Oct 2023
Molecular modelling of odd viscoelastic fluids
Authors: Paweł Matus, Ruben Lier, Piotr Surówka
Originally submitted: 23 Oct 2023
Probe particles in odd active viscoelastic fluids: how activity and dissipation determine linear stability
Authors: Charlie Duclut, Stefano Bo, Ruben Lier, Jay Armas, Piotr Surówka, Frank Jülicher
Originally submitted: 12 Oct 2023
2022
Hydrodynamics of plastic deformations in electronic crystals
Authors: Jay Armas, Erik van Heumen, Akash Jain, Ruben Lier
Originally submitted: 3 Nov 2022
Fractonic Berezinskii-Kosterlitz-Thouless transition from a renormalization group perspective
Authors: Kevin T. Grosvenor, Ruben Lier, Piotr Surówka
Originally submitted: 28 Jul 2022
Lift force in odd compressible fluids
Authors: Ruben Lier, Charlie Duclut, Stefano Bo, Jay Armas, Frank Jülicher, Piotr Surówka
Originally submitted: 25 May 2022
2021
Approximate symmetries, pseudo-Goldstones, and the second law of thermodynamics
Authors: Jay Armas, Akash Jain, Ruben Lier
Originally submitted: 29 Dec 2021
Passive odd viscoelasticity
Authors: Ruben Lier, Jay Armas, Stefano Bo, Charlie Duclut, Frank Jülicher, Piotr Surówka
Originally submitted: 14 Sep 2021
Bose-Hubbard realization of fracton defects
Authors: Krzysztof Giergiel, Ruben Lier, Piotr Surówka, Arkadiusz Kosior
Originally submitted: 14 Jul 2021
2020
Quantum Hall effective action for anisotropic Dirac semi-metal
Authors: Carlos Hoyos, Ruben Lier, Francisco Peña-Benitez, Piotr Surówka
Originally submitted: 25 Jun 2020