2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/110653We analyze the quantum phase transition for a set of $N$-two level systems interacting with a bosonic mode in the adiabatic regime. Through the Born-Oppenheimer approximation, we obtain the finite-size scaling expansion for many physical observables and, in particular, for the entanglement content of the system.4 pages, 3 figuresQuantum Physicstext