The Logic of Quantum Nonseparability

Bernard d’Espagnat

Vassilios Karakostas

Shaurya Bhave

G. C. Ghirardi

Lars Löfgren

Quantum measurement theory has a peculiar nature with its TWO processes of assertibility, by proof and by measurement, which is beyond formal logic. This two-sortedness with respect to assertibility is discussed in terms of developments of many--sorted logics, sometimes referred to as Logica Magna. Although useful insights are obtained this way, we argue that there is a nonseparability of inferribility and measurability that is understandable first with a shift from logic to language in its systemic conception. That is, from a Logica Magna to a Systema Magnum understood as a truly systemic whole of complementary description and interpretation processes. In introspective quantum mechanics as a Systema Magnum, the nonseparability sheds light on interconnections between formalism and experimentalism which, for example, helps a critical understanding of Deutsch’s hypothesis of a programmable experimentability ("quantum computation").

Ramona Ardelean

If the paradigm of classical epistemology follows the logic of the part, being tributary to the principle of subject-object separability, in which the subject, that is, the part, is considered separate from the object, that is, the whole, then the new paradigm of the quantum theory has replaced the principle of separability, specific to the logic of the part, with the principle of subject-object nonseparability or global intercorrelation, specific to the logic of the whole. Starting from this principle of quantum nonseparability, I will show that it can be explored and applied in new forms of psychotherapy. I mean here the art of meditation, as the art of the whole, that is, the art of perceiving the world and ourselves in a nondualistic nonanalytical, and nonfragmentary way, in which the subject and the object, the observer and the observed, the part and the whole, are not separated, but interconnected.