activity
20222026
most citedFluctuation Dissipation Relations for Active Field Theories

7 citations · 13 across the 8 of their papers we have counts for

collaborators

8 papers

cond-mat.soft2026

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…

physics.comp-ph2025

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…

cond-mat.soft2025

Non-reciprocal interactions between condensates in chemically active mixtures

Jacopo Romano, Martin Kjøllesdal Johnsrud, Benoît Mahault +1

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…

cond-mat.soft2025

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…

cond-mat.stat-mech2025★ 3 cited

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…

cond-mat.stat-mech2024★ 7 cited

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…

hep-ph2023

Chiral perturbation theory and Bose-Einstein condensation in QCD

Jens O. Andersen, Martin Kjøllesdal Johnsrud, Qing Yu +1

We present recent results in three-flavor chiral perturbation theory at finite isospin and strangeness chemical potentials at zero temperature. The phase diagram to ${\…

hep-ph2022★ 3 cited

Phases of QCD at nonzero isospin and strangeness chemical potentials with application to pion stars

Jens O. Andersen, Martin Kjøllesdal Johnsrud

We study pion and kaon condensation using three-flavor chiral perturbation theory at finite isospin and strangeness quark chemical potentials μI and μS . The phase diagram consists…