36 citations · 170 across the 16 of their papers we have counts for
16 papers
Sorting prolate and oblate spheroids with a diatomic gas in a magnetic field
Ruben Lier
For a gas of diatomic particles with a nonzero magnetic moment, the Senftleben-Beenakker effect implies that transport can be affected by a magnetic field even when the particles a…
Machine Learning the H-theorem
Ruben Lier
The H-theorem provides a microscopic foundation for the Second Law of Thermodynamics and therefore occupies a central place in statistical physics. At the same time, its relation t…
Odd viscous flow past a sphere at low but nonzero Reynolds numbers
Ruben Lier
Measuring lift force on symmetrically shaped obstacles immersed in laminar flow is the quintessential way of signalling odd viscosity. For flow past cylinders, such a lift force do…
Hydrodynamics of thermal active matter
Jay Armas, Akash Jain, Ruben Lier
Active matter concerns many-body systems comprised of living or self-driven agents that collectively exhibit macroscopic phenomena distinct from conventional passive matter. Using…
Holographic transport in anisotropic plasmas
Tuna Demircik, Domingo Gallegos, Umut Gürsoy +2
We study energy-momentum and charge transport in strongly interacting holographic quantum field theories in an anisotropic thermal state by contrasting three different holographic…
Slip-induced odd viscous flow past a cylinder
Ruben Lier
Odd viscosity is a transport coefficient that can occur when fluids experience breaking of parity and time-reversal symmetry. Previous knowledge indicates that cylinders in incompr…
Topological plasma oscillations in the solar tachocline
Ruben Lier, Richard Green, Jan de Boer +1
We study the properties of plasma oscillations in the solar tachocline using shallow-water magnetohydrodynamic equations. These oscillations are expected to correlate with solar ac…
A Novel Method for Holographic Transport
Tuna Demircik, Domingo Gallegos, Umut Gürsoy +2
We introduce a novel and effective method to compute transport coefficients in strongly interacting plasma states in holographic QFTs. Our method is based on relating the IR limit…
Molecular modelling of odd viscoelastic fluids
Paweł Matus, Ruben Lier, Piotr Surówka
We consider an active, stochastic microscopic model of particles suspended in a fluid and show that the coarse-grained description of this model renders odd viscoelasticity. The pa…
Probe particles in odd active viscoelastic fluids: how activity and dissipation determine linear stability
Charlie Duclut, Stefano Bo, Ruben Lier +3
Odd viscoelastic materials are constrained by fewer symmetries than their even counterparts. The breaking of these symmetries allow these materials to exhibit different features, w…
Hydrodynamics of plastic deformations in electronic crystals
Jay Armas, Erik van Heumen, Akash Jain +1
We construct a new hydrodynamic framework describing plastic deformations in electronic crystals. The framework accounts for pinning, phase, and momentum relaxation effects due to…
Fractonic Berezinskii-Kosterlitz-Thouless transition from a renormalization group perspective
Kevin T. Grosvenor, Ruben Lier, Piotr Surówka
Proliferation of defects is a mechanism that allows for topological phase transitions. Such a phase transition is found in two dimensions for the XY-model, which lies in the Berezi…
Lift force in odd compressible fluids
Ruben Lier, Charlie Duclut, Stefano Bo +3
We compute the response matrix for a tracer particle in a compressible fluid with odd viscosity living on a two-dimensional surface. Unlike the incompressible case, we find that an…
Approximate symmetries, pseudo-Goldstones, and the second law of thermodynamics
Jay Armas, Akash Jain, Ruben Lier
We propose a general hydrodynamic framework for systems with spontaneously broken approximate symmetries. The second law of thermodynamics naturally results in relaxation in the hy…
Passive odd viscoelasticity
Ruben Lier, Jay Armas, Stefano Bo +3
Active chiral viscoelastic materials exhibit elastic responses perpendicular to the applied stresses, referred to as odd elasticity. We use a covariant formulation of viscoelastici…
Bose-Hubbard realization of fracton defects
Krzysztof Giergiel, Ruben Lier, Piotr Surówka +1
Bose-Hubbard models are simple paradigmatic lattice models used to study dynamics and phases of quantum bosonic matter. We combine the extended Bose-Hubbard model in the hard-core…