61 citations · 165 across the 14 of their papers we have counts for
14 papers
Motility-induced crystallization and rotating crystallites
Max Philipp Holl, Alina Barbar Steinberg, Uwe Thiele
Active soft matter frequently shows motility-induced phase separation (MIPS), where self-propelled particles condensate into clusters with an inner liquid-like structure. Such acti…
A review of active matter reviews
Michael te Vrugt, Raphael Wittkowski
In the past years, the amount of research on active matter has grown extremely rapidly, a fact that is reflected in particular by the existence of more than 600 review articles on…
Microscopic derivation of the thin film equation using the Mori-Zwanzig formalism
Michael te Vrugt, Leon Topp, Raphael Wittkowski +1
The hydrodynamics of thin films is typically described using phenomenological models whose connection to the microscopic particle dynamics is a subject of ongoing research. Existin…
Pair-distribution function of active Brownian spheres in three spatial dimensions: simulation results and analytical representation
Stephan Bröker, Michael te Vrugt, Julian Jeggle +2
The pair-distribution function, which provides information about correlations in a system of interacting particles, is one of the key objects of theoretical soft matter physics. In…
Passive and active field theories for disease spreading
Michael te Vrugt, Julian Jeggle, Raphael Wittkowski
The worldwide COVID-19 pandemic has led to a significant growth of interest in the development of mathematical models that allow to describe effects such as social distancing measu…
Thermodynamics of an Empty Box
Georg J. Schmitz, Michael te Vrugt, Tore Haug-Warberg +3
A gas in a box is perhaps the most important model system studied in thermodynamics and statistical mechanics. Usually, studies focus on the gas, whereas the box merely serves as a…
From a microscopic inertial active matter model to the Schrödinger equation
Michael te Vrugt, Tobias Frohoff-Hülsmann, Eyal Heifetz +2
Field theories for the one-body density of an active fluid, such as the paradigmatic active model B+, are simple yet very powerful tools for describing phenomena such as motility-i…
Active Brownian particles in external force fields: field-theoretical models, generalized barometric law, and programmable density patterns
Jens Bickmann, Stephan Bröker, Raphael Wittkowski
We investigate the influence of external forces on the collective dynamics of interacting active Brownian particles in two as well as three spatial dimensions. Via explicit coarse…
Topological fine structure of smectic grain boundaries and tetratic disclination lines within three-dimensional smectic liquid crystals
Paul A. Monderkamp, René Wittmann, Michael te Vrugt +3
Observing and characterizing the complex ordering phenomena of liquid crystals subjected to external constraints constitutes an ongoing challenge for chemists and physicists alike.…
Mori-Zwanzig formalism for general relativity: a new approach to the averaging problem
Michael te Vrugt, Sabine Hossenfelder, Raphael Wittkowski
Cosmology relies on a coarse-grained description of the universe, assumed to be valid on large length scales. However, the nonlinearity of general relativity makes coarse-graining…
Master equations for Wigner functions with spontaneous collapse and their relation to thermodynamic irreversibility
Michael te Vrugt, Gyula I. Tóth, Raphael Wittkowski
Wigner functions, allowing for a reformulation of quantum mechanics in phase space, are of central importance for the study of the quantum-classical transition. A full understandin…
The Mereology of Thermodynamic Equilibrium
Michael te Vrugt
The special composition question (SCQ), which asks under which conditions objects compose a further object, establishes a central debate in modern metaphysics. Recent successes of…
Containing a pandemic: Nonpharmaceutical interventions and the "second wave"
Michael te Vrugt, Jens Bickmann, Raphael Wittkowski
In response to the worldwide outbreak of the coronavirus disease COVID-19, a variety of nonpharmaceutical interventions such as face masks and social distancing have been implement…
The Five Problems of Irreversibility
Michael te Vrugt
Thermodynamics has a clear arrow of time, characterized by the irreversible approach to equilibrium. This stands in contrast to the laws of microscopic theories, which are invarian…