Quantum fluxes and $⟨{\hat{\Phi }}^2⟩$ for a non-minimally coupled scalar field: ringdown and tail on approaching the polar Kerr inner horizon

Maria Alberti, Noa Zilberman, Marc Casals +1

We compute $⟨{\hat{\Phi }}^2{⟩}_{\text{ren}}$ as well as the energy fluxes $⟨{\hat{T}}_{uu}{⟩}_{\text{ren}}$ and $⟨{\hat{T}}_{vv}{⟩}_{\text{ren}}$ (where $u$ and $v…