159 citations · 993 across the 41 of their papers we have counts for
5 papers · 1 filter
Brownian motion surviving in the unstable cubic potential and the role of Maxwell's demon
Luca Ornigotti, Artem Ryabov, Viktor Holubec +1
Trajectories of an overdamped particle in a highly unstable potential diverge so rapidly, that the variance of position grows much faster than its mean. Description of the dynamics…
Diverging, but negligible power at Carnot efficiency: theory and experiment
Viktor Holubec, Artem Ryabov
We discuss the possibility of reaching the Carnot efficiency by heat engines (HEs) out of quasi-static conditions at nonzero power output. We focus on several models widely used to…
Optomechanical oscillator controlled by variation in its heat bath temperature
Michal Kolář, Artem Ryabov, Radim Filip
We propose a generation of a low-noise state of optomechanical oscillator by a temperature dependent force. We analyze the situation in which a quantum optomechanical oscillator (d…
Work and power fluctuations in a critical heat engine
Viktor Holubec, Artem Ryabov
We investigate fluctuations of output work for a class of Stirling heat engines with working fluid composed of interacting units and compare these fluctuations to an average work o…
Thermal ratchet effect in confining geometries
Viktor Holubec, Artem Ryabov, Mohammad Hassan Yaghoubi +4
Stochastic model of the Feynman-Smoluchowski ratchet is proposed and solved using generalization of the Fick-Jacobs theory. The theory fully captures nonlinear response of the ratc…