CONICET | Buscador de Institutos y Recursos Humanos

The classical limit is fundamental in quantum mechanics. It means that quantumpredictions must converge to classical ones as the macroscopic scale is approached.Yet, how and why quantum phenomena vanish at the macroscopic scale is diicultto explain. In this paper, quantum predictions for Greenberger?Horne?Zeilingerstates with an arbitrary number q of qubits are shown to become indistinguishablefrom the ones of a classical model as q increases, even in the absence of loopholes.Provided that two reasonable assumptions are accepted, this result leads to a simpleway to explain the classical limit and the vanishing of observable quantum phenomena at the macroscopic scale.