2 papers
cond-mat.stat-mech2026
How wrong is too wrong: A numerical study on the relevance of positional memory in the generalized Langevin equation
Abhir Mehrotra, Fabian Koch, Tanja Schilling
If a generalized Langevin equation contains a potential of mean force, it cannot at the same time contain a linear memory kernel and a fluctuating force that obeys a second fluctua…
cond-mat.stat-mech2025
Snap, Crackle, and Pop: This is why the potential of mean force clashes with the fluctuation dissipation relation
Fabian Koch, Tabita Wasmer, Tanja Schilling
We analyze the non-linear generalized Langevin equation which contains a thermodynamic force. We show that even for systems in thermal equilibrium the presence of the thermodynamic…