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José Isidro, Universidade Politécnica de Valência

Quantum Mechanics as an Emergent Phenomenon

Motivated in part by the difficulties facing a quantum theory of gravity, Nobel Prize laureate G.'t Hooft has argued that quantum mechanics cannot provide a definitive description of the microscopic world. 't Hooft argues that, underlying quantum mechanics, a *deeper level* theory must exist, which must be deterministic, as opposed to the fundamental indetermism of quantum theory. Moreover, standard quantum mechanics must *emerge* as an effective theory out of this *more fundamental* theory. We will first review 't Hooft's arguments. Then we will briefly present our own contribution to this research line.