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Lettere al nuovo cimento della societa italiana di fisica/Lettere al nuovo cimento

Mathematical foundations of the projection-operator method

Steven M. Moore

Published Sep 1, 1979• 2 citations
Publisher
DOI
10.1007/bf02746605

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Abstract This chapter is devoted to the foundations and to the basic mathematical structure of the non-Markovian quantum dynamics of open systems. It gives a survey of the Nakajima–Zwanzig projection operator methods with the help of which one derives so-called generalized master equations for the reduced system dynamics. In the non-Markovian regime, these master equations involve a retarded memory kernel, i.e. a time-convolution integral taken over the history of the reduced system. The chapter also describes an alternative method of particular relevance in many applications, which is based on a time-local quantum master equation, and which is known as the time-convolutionless projection operator method. This method serves as a starting point for a systematic expansion in terms of ordered cumulants and forms the basis for a non-Markovian stochastic unravelling of the reduced system dynamics.
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This paper inaugurates the first of a three-part exploration into the Quantum Mechanics of Consciousness formulated as QT-Aware 1 , focusing on its mathematical foundations. Building upon von Neumann’s rigorous operator formalism, we reinterpret the Hilbert space framework as an informational architecture that accommodates observer-dependence, self-referential dynamics, and coherence structures.Rather than invoking new metaphysical assumptions, we extend standard quantum mechanics using density operators, spectral projectors, and feedback-based recursion to model consciousness as an emergent, mathematically expressible field. Measurement is treated as a projection operation within a self-correcting system, with entropy and coherence playing central roles in defining informational stability.We introduce recursive tensor dynamics, propose coherence-based attractors as generalized eigenstates of awareness, and validate these structures through formal stability criteria. By preserving mathematical integrity of quantum mechanics, this framework sets the foundation for extending quantum mechanics into domains of cognition, observation, and informational coherence, while remaining fully compatible with established frameworks of modern physics.