Entanglement in the quantum spherical model: a review

We review some recent results on entanglement in the Quantum Spherical Model (QSM). The focus lays physical rather than mathematical details. Specifically, we study several entanglement-related quantities, such asentanglement entropies, and logarithmic negativity, presence of quantum classical critical points, magnetically ordered phases. consider both short as well long-range QSM. properties QSM is feasible because model mappable to a Gaussian system any dimension. Despite this fact an ideal theoretical laboratory investigate wide variety scenarios, non mean field criticality, effect interactions, interplay between finite-temperature fluctuations genuine ones.