Formalism of Generalized Contexts and Quantum Measurement

Authors

  • Marcelo Losada Universidad de Buenos Aires/CONICET
  • Roberto Laura Universidad Nacional de Rosario, Argentina

DOI:

https://doi.org/10.48160/18532330me9.234

Keywords:

quantum foundations, quantum histories, quantum measurement

Abstract

In this paper, the measurement process of a quantum system is described as an interaction of two physical systems: the system to be measured and the measuring instrument. Both systems form a composite system and its temporal evolution is determined solely by the Schrödinger equation, i.e., there is no collapse postulate. The description of the measurement process is performed using a formalism of quantum histories called formalism of Generalized Contexts. This formalism allows to express, using the conditional probability, the correlation between the properties corresponding to the measured observable, before the measurement, and the properties corresponding to the pointer variable of the measurement instrument, after the measurement. Using this formalism, two central problems of quantum measurement are discussed: the problem of definite outcome and the problem of preferred basis.

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Published

2019-04-01

How to Cite

Losada, M., & Laura, R. (2019). Formalism of Generalized Contexts and Quantum Measurement. Metatheoria – Journal of Philosophy and History of Science, 9(2), 83–94. https://doi.org/10.48160/18532330me9.234