3 papers
cond-mat.soft2026
Bath-modes quantitatively capture the nonlinear microrheology of micellar solutions
Pierre Champagnac, Clemens Bechinger, Juliana Caspers +3
Active microrheology experiments, in which a probe is driven through a complex fluid, often exhibit nonlinear responses that cannot be captured by generalized Langevin equations. M…
cond-mat.stat-mech2025
Equilibrium trajectories quantify second order violation of fluctuation dissipation theorem without need of a model
Juliana Caspers, Karthika Krishna Kumar, Clemens Bechinger +1
Quantifying and characterizing fluctuations far away from equilibrium is a challenging task. We discuss and experimentally confirm a series expansion for a driven classical system,…
cond-mat.stat-mech2025
Identities for nonlinear memory kernels
Juliana Caspers, Matthias Krüger
Perturbing a system far away from equilibrium via a time dependent protocol can formally be described by a nonlinear Volterra series expansion. Here we derive identities for the no…