7 papers
Scaling behavior in non-reciprocal and odd conserved dynamics near criticality
Martin Kjøllesdal Johnsrud, Giulia Pisegna, Ramin Golestanian
In recent years, non-reciprocity has been explored as a ubiquitous manifestation of non-equilibrium activity at the microscopic scales for various active matter systems, from mixtu…
State Diagram of the Non-Reciprocal Cahn-Hilliard Model and the Effects of Symmetry
Martin Kjøllesdal Johnsrud, Ramin Golestanian
Interactions between active particles may be non-reciprocal, breaking action-reaction symmetry and leading to novel physics not observed in equilibrium systems. The non-reciprocalC…
Non-reciprocal interactions between condensates in chemically active mixtures
Jacopo Romano, Martin Kjøllesdal Johnsrud, Martin Kjøllesdal Johnsrud +3
We study the behaviour of catalytically active droplets in multi-component conserved mixtures affected by noise. Working in the thin interface limit, we analytically determine the…
Efficient Pseudo-spectral Algorithms for Statistical Field Theories
Martin Kjøllesdal Johnsrud, Navdeep Rana
We present stochastic variants of the exponential time differencing schemes for stiff stochastic differential equations. We derive three explicit schemes that offer better stabilit…
Fluctuation Dissipation Relations for the Non-Reciprocal Cahn-Hilliard Model
Martin Kjøllesdal Johnsrud, Ramin Golestanian
Recent results demonstrate how deviations from equilibrium fluctuation--dissipation theorem can be quantified for active field theories by deriving exact fluctuations dissipation r…
Fluctuation Dissipation Relations for Active Field Theories
Martin Kjøllesdal Johnsrud, Ramin Golestanian
Breakdown of time-reversal symmetry is a defining property of non-equilibrium systems, such as active matter, which is composed of units that consume energy. We employ a formalism…