Talk:Quantum system

Redirect
I don't think this page should redirect; it's unhelpful to click on "Quantum System" to clarify what a page is talking about and instead be taken to a page describing what Quantum mechanics is.

Yes, I agree, this is unhelpful to me, what is a quantum system? —Preceding unsigned comment added by 24.141.42.221 (talk) 04:30, 10 September 2008 (UTC)

Quantum system redirects to Physical system, which states: "In the study of quantum decoherence the 'system' may refer to the macroscopic properties of an object." I don't get this, as macroscopic is usually distinguished from quantum. Tamurphy (talk) 23:12, 3 January 2014 (UTC)tamurphy

On what this article should discuss
We should probably: * Define the difference between a normal 'system' and a 'quantum system'. * Provide an overview of their function within quantum mechanics (how they help solve problems/explain stuff). * Link to well known systems and types of systems (e.g. two-level quantum systems).

109.158.27.60 (talk) 14:29, 30 December 2015 (UTC)

Incoherence of the term
A system is a set of interrelated parts (Bertalanffy et.al.), so systems are elements of our perception, are conceptual, NOT PHYSICAL. Relations usually stand on interactions, which are also subjective perceptions. Interactions are action/reaction instances for each object in the interaction, which implies causality. That is also a subjective perception. See Kant, Russell, Hume, etc.

The current definition "a portion of the universe" is appropriate, but it should be remarked that "a portion" is a subjective approach of the universe, a subjective definition of boundaries (because there are no physical boundaries in the universe). Nevertheless, the term seems quite incoherent within the framework of quantum mechanics. Since things are systems (because things are sets of physically interrelated parts), this is a definition of a "quantum thing": a quantum "whole", a quantum "body", and if interactions are strong, a quantum "solid". Approaching quantum mechanics within a terminology of the macroscopic realm seems a huge contradiction with the QM foundations.

I will not edit the page, I don't know the wikipedia rules. Rodolfoap (talk) 12:34, 16 November 2018 (UTC)

Merge to Quantum mechanics
I propose to merge to Quantum mechanics. --Zotur (talk) 09:34, 20 May 2020 (UTC)