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6 papers · 2 filters
Quantum Performance of Thermal Machines over Many Cycles
Gentaro Watanabe, B. Prasanna Venkatesh, Peter Talkner +1
The performance of quantum heat engines is generally based on the analysis of a single cycle. We challenge this approach by showing that the total work performed by a quantum engin…
Merits and Qualms of Work Fluctuations in Classical Fluctuation Theorems
Jiawen Deng, Alvis Mazon Tan, Peter Hanggi +1
Work is one of the most basic notion in statistical mechanics, with work fluctuation theorems being one central topic in nanoscale thermodynamics. With Hamiltonian chaos commonly t…
Non-monotonic temperature dependence of chaos-assisted diffusion in driven periodic systems
Jakub Spiechowicz, Peter Talkner, Peter Hänggi +1
The spreading of a cloud of independent Brownian particles typically proceeds more effectively at higher temperatures, as it derives from the commonly known Sutherland-Einstein rel…
Open system trajectories specify fluctuating work but not heat
Peter Talkner, Peter Hänggi
Based on the explicit knowledge of a Hamiltonian of mean force, the classical statistical mechanics and equilibrium thermodynamics of open systems in contact with a thermal environ…
Superdiffusive dispersals impart the geometry of underlying random walks
V. Zaburdaev, I. Fouxon, S. Denisov +1
It is recognised now that a variety of real-life phenomena ranging from diffuson of cold atoms to motion of humans exhibit dispersal faster than normal diffusion. Lévy walks is a m…
Occurrence of discontinuities in the performance of finite-time quantum Otto cycles
Yuanjian Zheng, Peter Hänggi, Dario Poletti
We study a quantum Otto cycle in which the strokes are performed in finite time. The cycle involves energy measurements at the end of each stroke to allow for the respective determ…