Quantum origins of objectivity

Observation and Quantum Objectivity

Observation and Quantum Objectivity

The paradox of Wigner’s friend challenges the objectivity of description in quantum theory. A pragmatist interpretation can meet this challenge by judicious appeal to decoherence. On this interpretation, quantum theory provides situated agents with resources for predicting and explaining what happens in the physical world— not conscious observations of it. Even in Wigner’s friend scenarios, di¤...

On Classical and Quantum Objectivity

We propose a conceptual framework for understanding the relationship between observables and operators in mechanics. To do so, we introduce a postulate that establishes a correspondence between the objective properties permitting to identify physical states and the symmetry transformations that modify their gauge dependant properties. We show that the uncertainty principle results from a faithf...

Aspects of Objectivity in Quantum Mechanics

Objectivity versus Completeness in Quantum Mechanics

The old Bohr–Einstein debate about the completeness of quantum mechanics (QM) was held on an ontological ground but can be transferred at a semantic level. Indeed every physical theory adopts, explicitly or not, a truth theory for its observative language, in terms of which the notions of semantic objectivity and semantic completeness can be introduced and inquired. In particular, standard QM a...