Talk:Unitarity (physics)

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You might want to check that operator.— Preceding unsigned comment added by (talk) 16:31, 9 October 2007

Second law of thermodynamics?? If energy were not bounded from below, the first law would not make much sense. -- (talk) 08:49, 3 July 2012 (UTC)

Assessment comment[edit]

The comment(s) below were originally left at Talk:Unitarity (physics)/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.

==Why call this article a stub?== While reading about the Higgs Boson, I ran into this article, which I find to be clear and concise. It explains in simple terms what "unitarity" signifies. I don't see why an article on this reasonably simple concept needs to be any longer than this one currently is. (Note: I'm not a professional physicist.) Dratman (talk) 01:26, 20 September 2008 (UTC)

Last edited at 01:34, 20 September 2008 (UTC). Substituted at 09:34, 30 April 2016 (UTC)

quantum decoherence acts against unitarity[edit]

Static Universes are a result of absolute unitarity, but aren't actual.

unitarity is perceived as if it was maintained only if a very controlled experiment lasts shortly and if the non neutral distribution of measurement deviations are not strong enough
 — Preceding unsigned comment added by 2A02:587:4100:AD00:5040:8F69:E3E2:4F13 (talk) 19:46, 20 September 2016 (UTC) 

Please create the Unitarity violation page[edit]

  1. when the system isn't closed-confined (the observable Universe isn't closed, neither the actual Universe, even if it has edges {of course it hasn't, or more accurately it has maximum probabilistic uncertainty edges in respect to an observer, it means after that edge any possible arrangement is accepted} they never reach zero density)
  2. when quantum noise accumulates
  3. when dark energy acts (but some claim that dark energy is a unitarity violation, a minor statistical violation for our Universe, but a future Big Bang cause, because it accumulates thus grows in magnitude) — Preceding unsigned comment added by 2A02:587:410D:D600:8C45:C97D:86A8:51F4 (talk) 11:22, 4 November 2016 (UTC)