# Extended equipartition in a mechanical system subject to a heat flow: the case of localised dissipation

@article{Fontana2020ExtendedEI, title={Extended equipartition in a mechanical system subject to a heat flow: the case of localised dissipation}, author={Alex Fontana and Richard Pedurand and Ludovic Bellon}, journal={Journal of Statistical Mechanics: Theory and Experiment}, year={2020}, volume={2020} }

Statistical physics in equilibrium grants us one of its most powerful tools: the equipartition principle. It states that the degrees of freedom of a mechanical system act as a thermometer: temperature is equal to the mean variance of their oscillations divided by their stiffness. However, when a non-equilibrium state is considered, this principle is no longer valid. In our experiment, we study the fluctuations of a micro-cantilever subject to a strong heat flow, which creates a highly non…

## 2 Citations

### Linking fluctuation and dissipation in spatially extended out-of-equilibrium systems

- Physics
- 2022

For systems in equilibrium at a temperature T , thermal noise and energy damping are related to T through the ﬂuctuation-dissipation theorem (FDT). We study here an extension of the FDT to an…

### Thermal noise of a cryocooled silicon cantilever locally heated up to its melting point.

- PhysicsPhysical review. E
- 2021

This experiment studies a microcantilever brought out of equilibrium by a strong heat flux generated by the absorption of the light of a laser, and demonstrates how the thermal fluctuations of all the observed degrees of freedom are much lower than what is expected from the average temperature of the system.

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