Quantum Framework for Cross-Domain Applications: From Infinite-Dimensional Operator Theory to Quantum Cognition and Quantum Game Theory
Abstract Infinite-dimensional operator theory provides a powerful mathematical foundation for modern physics and cognitive science. This paper begins with the distinction between linear operators in finite- and infinite-dimensional spaces, then explores their applications in quantum field theory, quantum probability decision theory, quantum cognition, and quantum game theory. Through concepts such as Hilbert space, projection operators, quantum interference, and entanglement, this paper demonstrates how the quantum framework surpasses classical models in accurately describing uncertainty, contextuality, and strategic interactions in complex systems. Finally, the latest real-world developments at the research frontier are discussed. 1. Introduction: From Operators to Quantum Framework In finite-dimensional vector spaces, linear operators can be fully represented by matrices. However, when systems enter infinite-dimensional Hilbert spaces, operator theory must address unbounded operators...