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68 papers · 1 filter
Generalized density functional theory framework for the non-linear density response of quantum many-body systems
Zhandos A. Moldabekov, Cheng Ma, Xuecheng Shao +5
A density functional theory (DFT) framework is presented that links functional derivatives of free-energy functionals to non-linear static density response functions in quantum man…
Accelerated first-passage dynamics in a non-Markovian feedback Ornstein--Uhlenbeck process
Francesco Coghi, Romain Duvezin, John S. Wettlaufer
We study the first-passage dynamics of a non-Markovian stochastic process with time-averaged feedback, which we model as a one-dimensional Ornstein--Uhlenbeck process wherein the p…
Bridging the Gap between Koopmanism and Response Theory: Using Natural Variability to Predict Forced Response
Niccolò Zagli, Matthew Colbrook, Valerio Lucarini +2
The fluctuation-dissipation theorem is a cornerstone result in statistical mechanics that can be used to translate the statistics of the free natural variability of a system into i…
Dynamics of switching processes: general results and applications to intermittent active motion
Ion Santra, Kristian Stølevik Olsen, Deepak Gupta
Systems switching between different dynamical phases is an ubiquitous phenomenon. The general understanding of such a process is limited. To this end, we present a general expressi…
Ice on curved surfaces: defect rings and differential local dynamics
Adhitya Sivaramakrishnan, R. Ganesh
Ice systems are prototypes of locally constrained dynamics. This is exemplified in Coulomb-liquid phases where a large space of configurations is sampled, each satisfying local ice…
Current fluctuations of a self-interacting diffusion on a ring
Francesco Coghi
We investigate fluctuations in the average speed or current of a self-interacting diffusion (SID) on a ring, mimicking the non-Markovian behaviour of an agent influenced by its own…