Evading Quantum Mechanics \`{a} la Sudarshan: quantum-mechanics-free subsystem as a realization of Koopman-von Neumann mechanics

TL;DR

This paper links Sudarshan's Koopman-von Neumann mechanics to quantum-mechanics-free subsystems, showing how the latter's experimental realizations effectively turn Koopman-von Neumann mechanics into an engineering discipline.

Contribution

It establishes a theoretical connection between Koopman-von Neumann mechanics and quantum-mechanics-free subsystems, highlighting their practical engineering applications.

Findings

Quantum-mechanics-free subsystems are experimentally realizable.

Koopman-von Neumann mechanics can be viewed as an engineering science.

Theoretical link between Sudarshan's viewpoint and practical subsystems.

Abstract

Tsang and Caves suggested the idea of a quantum-mechanics-free subsystem in 2012. We contend that Sudarshan's viewpoint on Koopman-von Neumann mechanics is realized in the quantum-mechanics-free subsystem. Since quantum-mechanics-free subsystems are being experimentally realized, Koopman-von Neumann mechanics is essentially transformed into an engineering science.