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8 papers · 2 filters
Brownian Carnot engine
Ignacio A. Martínez, Édgar Roldán, Luis Dinis +3
The Carnot cycle imposes a fundamental upper limit to the efficiency of a macroscopic motor operating between two thermal baths. However, this bound needs to be reinterpreted at mi…
Instabilities and relaxation to equilibrium in long-range oscillator chains
George Miloshevich, Jean-Pierre Nguenang, Thierry Dauxois +2
We study instabilities and relaxation to equilibrium in a long-range extension of the Fermi-Pasta-Ulam-Tsingou (FPU) oscillator chain by exciting initially the lowest Fourier mode.…
Adiabatic processes realized with a trapped Brownian particle
Ignacio A. Martínez, Édgar Roldán, Luis Dinis +2
We experimentally realize quasistatic adiabatic processes using a single optically-trapped micro- sphere immersed in water whose effective temperature is controlled by an external…
Statistical Mechanics of Hamiltonian Adaptive Resolution Simulations
Pep Español, Rafael Delgado-Buscalioni, Ralf Everaers +3
The Adaptive Resolution Scheme (AdResS) is a hybrid scheme that allows one to treat a molecular system with different levels of resolution depending on the location of the molecule…
General limit distributions for sums of random variables with a matrix product representation
Florian Angeletti, Eric Bertin, Patrice Abry
The general limit distributions of the sum of random variables described by a finite matrix product ansatz are characterized. Using a mapping to a Hidden Markov Chain formalism, no…
Experimental study of energy transport between two granular gas thermostats
Charles-Édouard Lecomte, Antoine Naert
We report on the energy transport between two coupled probes in contact with granular thermostats at different temperatures. In our experiment, two identical blades, which are elec…