Sharif Digital Repository

Considering the consistency between the predictions of a theory with what is observed in experience, Quantum Mechanics is the most accurate theory in the history of physics. However, is does not present us an unmbigiuos and realistic description about the nature of the microscopic phenomena. At the heart of these issues is the so-called measurement problem. The formalism of the quantum mechanics is unitary and deterministic. Nevertheles, when one does measurements, the unitary process of the evolution of wave-function breaks due to a stochastic abruption. The results of the measurements are in correspondence with the everyday experience of the observer. Yet, the theory itself does not... 

Quantum Theory leads to results that are consistent with the very high accuracy with experience and also includes a wide range of empirical phenomena. Hence, quantum mechanics is accepted as the best and most acclaimed physical theory. However, there is still no consensus between physicists on the interpretation of parts of this theory. One of the unresolved issues in quantum mechanics is the measurement problem. The basis of the measurement problem is a kind of transition from the quantum world to the classical world. The fundamental question that arises here is, where is the boundary between quantum mechanics and classical mechanics? and how can be described the transition from quantum...