Uncertainty and information in classical mechanics formulation. Common ground for thermodynamics and quantum mechanics

Details Uncertainty and information in classical mechanics formulation. Common ground for thermodynamics and quantum mechanics Uncertainty and information in classical mechanics formulation. Common ground for thermodynamics and quantum mechanics

2003-11-22

arxiv.org/abs/quant-ph/0311153v3

Physics

Quantum Physics

Version 3. The whole article rewritten. Main content change is in Sections II.A to II.D: The main idea --the CPDQ principle fo

Scientific paper

Mechanics can be founded on a principle relating the uncertainty delta-q in the trajectory of an observable particle to its motion relative to the observer. From this principle, p.delta-q=const., p being the q-conjugated momentum, mechanical laws are derived and the meaning of the Lagrangian and Hamiltonian functions are discussed. The connection between the presented principle and Hamilton's Least Action Principle is examined. Wave mechanics and Schrodinger equation appear without additional assumptions by choosing the representation for delta-q in the case the motion is not trajectory describable. The Cramer-Rao inequality serves that purpose. For a particle hidden from direct observation, the position uncertainty determined by the enclosing boundaries leads to thermodynamics in a straightforward extension of the presented formalism. The introduction of uncertainty in classical mechanics formulation enables the translation of mechanical laws into the wide ranging conceptual framework of information theory. The boundaries between classical mechanics, thermodynamics and quantum mechanics are defined in terms of informational changes associated with the system evolution. As a direct application of the proposed formulation upper bounds for the rate of information transfer are derived.

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