A decoherence-based approach to the classical limit in Bohm's theory

• URL: http://arxiv.org/abs/2304.03423v1
• Date: Fri, 7 Apr 2023 00:30:30 GMT
• Title: A decoherence-based approach to the classical limit in Bohm's theory
• Authors: Davide Romano
• Abstract summary: The de Broglie-Bohm theory reduces to Newtonian mechanics in the macroscopic classical limit. The quantum-to-classical transition is based on three steps.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: The paper explains why the de Broglie-Bohm theory reduces to Newtonian mechanics in the macroscopic classical limit. The quantum-to-classical transition is based on three steps: (i) interaction with the environment produces effectively factorized states, leading to the formation of effective wave functions and hence decoherence; (ii) the effective wave functions selected by the environment--the pointer states of decoherence theory--will be well-localized wave packets, typically Gaussian states; (iii) the quantum potential of a Gaussian state becomes negligible under standard classicality conditions; therefore, the effective wave function will move according to Newtonian mechanics in the correct classical limit. As a result, a Bohmian system in interaction with the environment will be described by an effective Gaussian state and--when the system is macroscopic--it will move according to Newtonian mechanics.

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