Speaker
Description
Femtoscopy, the technique of extracting space-time information of particle-emitting sources at femtometer scales via two-particle momentum correlations, has become a cornerstone tool in heavy-ion collision physics. This talk will introduce the basic concept of intensity interferometry, the formalism of the correlation function, and the Lednický-Lyuboshitz analytical model that bridges experimental observables to source parameters and the final state interesctions. Then I will present three selected experimental highlights in heavy ion collisions, spanning from the Fermi-energy domain to sub-GeV and ultra-relativistic energies, where the isospin dynamics, the hint of n-p short-range correlation and the final state interaction of particle pairs are inferred from the correlation functions.