193 citations · 1.2k across the 47 of their papers we have counts for
30 papers · 1 filter
Giant increase of diffusion by small rise of friction
I. G. Marchenko, I. I. Marchenko, V. Aksenova +2
Diffusion coefficient usually decreases when friction increases. We analyze the opposite behavior in the paradigmatic system consisting of an inertial Brownian particle moving in a…
Intriguing properties of transport at the microscales: Langevin equation approach
J. Spiechowicz, J. Łuczka
We present a perspective of simple models of nonequilibrium directed transport described in terms of a Langevin equation formalism. We consider a Brownian particle under various ci…
Memory corrections to Markovian Langevin dynamics
Mateusz Wiśniewski, Jerzy Łuczka, Jakub Spiechowicz
Analysis of non-Markovian systems and memory induced phenomena poses an everlasting challenge for physics. As a paradigmatic example we consider a classical Brownian particle of ma…
Effective mass approach to memory in non-Markovian systems
M. Wiśniewski, J. Łuczka, J. Spiechowicz
Recent pioneering experiments on non-Markovian dynamics done e.g. for active matter have demonstrated that our theoretical understanding of this challenging yet hot topic is rather…
Control of particle transport driven by active noise: strategy of amplification via a periodic potential
Karol Białas, Jerzy Łuczka, Jakub Spiechowicz
We extend our previous studies on a counter-intuitive effect in which a directed transport of a free Brownian particle induced by active fluctuations can be significantly enhanced…
Temperature anomalies of oscillating diffusion in ac-driven periodic systems
I. G. Marchenko, V. Aksenova, I. I. Marchenko +2
We analyse the impact of temperature on the diffusion coefficient of an inertial Brownian particle moving in a symmetric periodic potential and driven by a symmetric time-periodic…
Diffusion coefficient of a Brownian particle in equilibrium and nonequilibrium: Einstein model and beyond
Jakub Spiechowicz, Ivan G. Marchenko, Peter Hänggi +1
Diffusion of small particles is omnipresent in a plentiful number of processes occurring in Nature. As such, it is widely studied and exerted in almost all branches of sciences. It…
Periodic potential can enormously boost free particle transport induced by active fluctuations
K. Białas, J. Łuczka, J. Spiechowicz
Active fluctuations are detected in a growing number of systems due to self-propulsion mechanisms or collisions with active environment. They drive the system far from equilibrium…
Giant oscillations of diffusion in ac-driven periodic systems
I. G. Marchenko, A. Zhiglo, V. Aksenova +4
We revisit the problem of diffusion in a driven system consisting of an inertial Brownian particle moving in a symmetric periodic potential and subjected to a symmetric time-period…
Velocity multistability vs ergodicity breaking in a biased periodic potential
Jakub Spiechowicz, Peter Hänggi, Jerzy Łuczka
Multistability, i.e. the coexistence of several attractors for a given set of system parameters is one of the most important phenomena occurring in dynamical systems. We consider i…
Coexistence of absolute negative mobility and anomalous diffusion
J. Spiechowicz, P. Hänggi, J. Łuczka
Using extensive numerical studies we demonstrate that absolute negative mobility of a Brownian particle (i.e. the net motion into the direction opposite to a constant biasing force…
On superstatistics of energy for a free quantum Brownian particle
J. Spiechowicz, J. Łuczka
We consider energetics of a free quantum Brownian particle coupled to thermostat of temperature and study this problem in terms of the lately formulated quantum analogue of the…
Partition of energy for a dissipative quantum oscillator
P. Bialas, J. Spiechowicz, J. Łuczka
We reveal a new face of the old clichéd system: a dissipative quantum harmonic oscillator. We formulate and study a quantum counterpart of the energy equipartition theorem satisfie…
Subdiffusion via dynamical localization induced by thermal equilibrium fluctuations
Jakub Spiechowicz, Jerzy Łuczka
We reveal the mechanism of subdiffusion which emerges in a straightforward, one dimensional classical nonequilibrium dynamics of a Brownian ratchet driven by both a time-periodic f…
Energetics of a driven Brownian harmonic oscillator
Mohammad Yaghoubi, M. Ebrahim Foulaadvand, Antoine Bérut +1
We provide insights into energetics of a Brownian oscillator in contact with a heat bath and driven by an external unbiased time-periodic force that takes the system out of thermod…
Brownian ratchets: How stronger thermal noise can reduce diffusion
Jakub Spiechowicz, Marcin Kostur, Jerzy Łuczka
We study diffusion properties of an inertial Brownian motor moving on a ratchet substrate, i.e. a periodic structure with broken reflection symmetry. The motor is driven by an unbi…
Transient anomalous diffusion in periodic systems: ergodicity, symmetry breaking and velocity relaxation
Jakub Spiechowicz, Peter Hänggi, Jerzy Łuczka
We study far from equilibrium transport of a periodically driven inertial Brownian particle moving in a periodic potential. As detected recently for a SQUID ratchet dynamics (Spiec…
Efficiency of transport in periodic potentials: dichotomous noise contra deterministic force
J. Spiechowicz, J. Luczka, L. Machura
We study transport of an inertial Brownian particle moving in a symmetric and periodic one-dimensional potential, and subjected to both a symmetric, unbiased external harmonic forc…
Diffusion anomalies in ac driven Brownian ratchets
Jakub Spiechowicz, Jerzy Łuczka
We study diffusion in ratchet systems. As a particular experimental realization we consider an asymmetric SQUID subjected to an external ac current and a constant magnetic flux. We…
Efficiency of the SQUID Ratchet Driven by External Current
J. Spiechowicz, J. Łuczka
We study theoretically the efficiency of an asymmetric superconducting quantum interference device (SQUID) which is constructed as a loop with three capacitively and resistively sh…
Brownian motors in micro-scale domain: Enhancement of efficiency by noise
Jakub Spiechowicz, Peter Hänggi, Jerzy Łuczka
We study a noisy drive mechanism for efficiency enhancement of Brownian motors operating on the micro-scale domain. It was proven [J. Spiechowicz et al., J. Stat. Mech. P02044, (20…
Poissonian noise assisted transport in periodic systems
J. Spiechowicz, J. Luczka
We revisit the problem of transport of a harmonically driven inertial particle moving in a {\it symmetric} periodic potential, subjected to {\it unbiased} non-equilibrium generaliz…
Absolute negative mobility induced by white Poissonian noise
J. Spiechowicz, J. Luczka, P. Hanggi
We research the transport properties of inertial Brownian particles which move in a symmetric periodic potential and are subjected to both a symmetric, unbiased time-periodic exter…
Directed transport in coupled noisy Josephson junctions controlled via ac signals
L. Machura, J. Spiechowicz, J. Luczka
Transport properties of two coupled Josephson junctions driven by ac currents and thermal fluctuations are studied with the purpose of determining dc voltage characteristics. It is…