ground-state fluctuations. We are investigating dispersion forces in and out of thermal equilibrium [1,2,3] that are particularly relevant for long-wavelength atomic transitions as found in Rydberg atoms [...] atoms inside a hollow-core fiber can be used to tune the van der Waals interaction between them [13]. [1] S.Y. Buhmann and S. Scheel, Thermal Casimir versus Casimir-Polder Forces: Equilibrium and Nonequilibrium
https://www.qms.physik.uni-rostock.de/en/forschung/dispersion-forces/