Speaker
Description
The reconstruction of a cosmological stochastic gravitational-wave background (SGWB), or the derivation of its upper bounds, represents one of the key challenges for LISA. Achieving this goal requires a solid understanding of the instrumental noise, careful control of the systematics in the reconstruction of the transient sources, and reliable theoretical knowledge of both cosmological and astrophysical signals. Given these complexities, officially committing to a precise measurement and separation of the SGWB components is very risky but, on the other hand, a potential breakthrough in fundamental physics. This talk will try to outline the main perspectives surrounding this challenge and stimulate constructive feedback to help shape a realistic agenda for the LISA SGWB analysis.