Femtoscopy of the system shape fluctuations in heavy ion collisions

Understand

Dipole, triangular, and higher harmonic flow that have an origin in the initial density fluctuations has gained a lot of attention as they can provide additional important information about the dynamical properties (e.g.

• viscosity) of the system.
• The fluctuations in the initial geometry should be also reflected in the detail shape and velocity field of the system at freeze-out.
• In this talk I discuss the possibility to measure such fluctuations by means of identical and non-identical particle interferometry.