Lunedì, 21 luglio·13:30 - 14:30
Speaker: Valerio De Luca (U of Pennsylvania)
Host: Davide Gerosa
Title: Tidal Love numbers: from black holes to new physics
Abstract: Tidal Love numbers describe the conservative response of compact objects to external tidal perturbations. Remarkably, within General Relativity, they are found to vanish exactly for black holes in vacuum. We begin by revisiting this vanishing property from a symmetry-based perspective. We then explore how this feature is modified when black holes are embedded in external environments, assessing the prospects for detecting environmental-induced tidal effects with future gravitational wave observations. We also quantify the systematic biases introduced when tidally deformed binaries in environments are incorrectly modelled as isolated systems. Finally, we extend our analysis to more exotic compact objects, emphasizing the role of universality relations to distinguishing among them.