W7. Fluctuations in Physics

Workshop organized by:
F. Oliveira

Fluctuation-Dissipation Theorem.

Although the relationship between fluctuations and dissipation, established in terms of the so-called fluctuation-dissipation theorem (FDT) and formulating links between nonequilibrium phenomena and time correlations of spontaneous fluctuations (at equilibrium), has been widely investigated over the past 50 years, some violations of that casual relation are still often found in literature and present controversial facets calling for further corrections and generalizations. As an example, in generic quantum systems, FDT has been recently shown to be directly related to quantum metrology in systems with non-equilibrium states.
Moreover, with the crescent abilities of experimentalists to work in small scales and at low temperatures those quantum versions of fluctuation-dissipation (FD) relations need to be better understood.