Contextualism Interpretation On Quantum Measurement

It is an important thesis to analyse the theory and experiment of quantum measurement in the context of new developments in quantum mechanics. This dissertation analyses quantum measurement from both the theoretical and experimental perspectives by contextual analysis, proposes the contextualism interpretation of quantum measurement in order to give a new solution to quantum measurement problem.The first chapter presents the formalism of quantum mechanics, discusses the characteristic of quantum measurement, which is different from classical measurement; analyses the source of quantum measurement problem, its crucial point and different solve approaches, which including subjective and objective approaches; introduces three popular interpretations of quantum mechanics which intend to solve quantum measurement problem, and points out presuppositions and defects in these interpretations.Chapter two introduces decoherence program, analyses how it deals with measurement problem and whether it has solve measurement problem; then reviews interpretations of quantum theory on the view of decoherence program, trying to show how decoherence can help to complete, modify or evaluate these interpretations; in the end draws the conclusion that measurement problem is an open problem, there are still other approaches to solve or clear up it.In chapter three, four and five, we draw the common characteristic of different phases in quantum measurement, which is contextual characteristic.Chapter three classifies the different levels of background theory relates to quantum measurement and applies semantic ascent and descent to describe the relations between different levels; then takes Stern-Gerlach experiment as an example, analyses theoretical context of principle, manipulation and interpretation, and further more discusses the interactions between theoretical context and measurement, which including restriction, generation and interpretation functions of theory to measurement, and justification and recontextualization function of measurement to theory.Chapter four introduces semantic analysis in the discussion of quantum measurement process; taking EPR-Bohm experiment as an example, we analyse how the experiment evolves from gedenken experiment to factual experiment and its semantic representation, semantic transformation and semantic realization; clarifies the confusions on the meaning of "non-locality", and shows its exhibition in quantum theory and quantum world.Chapter five analyses how the explanatory contexts influence on the explanation of reference and meaning of scientific terms; taking energy-time uncertainty relation as an example, we discusses three different expalantory contexts of ETUR and corresponding references and meanings there; in the end we show how the explanatory context make function in general.Chapter six is the main and innovative part of this dissertation. Based on Copenhagen interpretation and neo-Copenhagen interpretation, which emphasize measurement and context-dependent characteristic of quantum measurement, we propose contextualism interpretation. Contextualism takes context as a basic form of reality, adopts context-dependence of measurement as its epistemological attitude and contextual analysis as its basic method. By treating definite outcome in measurement as empirical exhibition in certain context, and denying eigenvalue-eigenstate link, contextualism can provide a new approach to solve quantum measurement problem.The conclusion summarizes the article, stresses the scientific realism attitude on quantum mechanics, and puts forward future challenages that contextualism interpretation of quantum measurement will confront with.