6 papers
Large scale behavior in the Kuramoto-Sivashinsky equation: The Schwinger-Dyson route
Olivier Coquand
The present paper is a study of the large scale properties of the Kuramoto-Sivashinsky equation. By using a Schwinger-Dyson framework, we aim to provide a proof that the only solut…
Direct Boltzmann inversion method from particle configurations at arbitrary state points
Olivier Coquand, Davide Paolino, Ludovic Berthier
We introduce a direct Boltzmann inversion method to infer the interaction potential in particle systems using as input particle configurations generated at an arbitrary state point…
Getting rid of the ghosts: a toy-model of membrane melting
Olivier Coquand
The theory of thermal fluctuations in crystalline membranes is put under scrutiny. In particular, the two critical regimes of the renormalisation group diagram, which are often lef…
The effect of water on granular liquid flows: from debris to mud flows
O. Coquand
In this work, we show how the rheology of granular suspensions can be related to the properties of the fluctuations of the velocity field inside the medium. In particular, effectiv…
Energy Cascades in Driven Granular Liquids : A new Universality Class? I : Model and Symmetries
O. Coquand
This article deals with the existence and scaling of an energy cascade in steady granular liquid flows between the scale at which the system is forced and the scale at which it dis…
Granular rheology: a tale of three time scales
Olivier Coquand, Wolf Till Kranz, Matthias Sperl
We adapt statistical models of the physics of complex fluids to study the rheology of granular liquids. This allows us to provide laws of granular rheology based on first principle…