Can Schrodinger's Cat Truly Be Dead and Alive at the Same Time?

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    Schrodinger's cat
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Discussion Overview

The discussion revolves around Schrödinger's Cat thought experiment, exploring its implications for quantum mechanics (QM) and the nature of superposition. Participants consider the feasibility of performing the experiment and the philosophical questions it raises about observation and reality.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants assert that Schrödinger's Cat is purely a thought experiment that cannot be practically recreated, emphasizing that observation collapses the wave function, resulting in either a living or dead cat.
  • Others argue that while the specific experiment cannot be conducted, similar experiments have been performed, such as the Stony Brook/Delft SQUID experiments, which demonstrate superposition in quantum systems.
  • One participant suggests that the size of the cat and its interactions with the environment prevent it from existing in a superposition for any significant duration.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the implications of the thought experiment, with some focusing on its theoretical aspects while others highlight practical limitations and related experiments.

Contextual Notes

There are unresolved questions regarding the definitions of "dead" and "alive" in the context of the experiment, as well as the assumptions underlying the feasibility of superposition in macroscopic systems.

Delzac
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hi,

i'm sure everyone here knows about "Schrödinger's Cat" paradoxical thought experiment. what will actually happen if we actually perform it? could it defy QM? if not, will the cat be dead and alive at the same time?
 
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It is only a thought experiment, since it can't be practically recreated in real life.

Anyway, the point is, we can never observe the cat being alive AND dead, since the moment we observe it, we collapse the wave function and pick one of the options.

i.e. when we open the box we find the cat either alive or dead. No matter how many times we repeat the experiment**, we open it and find a cat either alive or dead, completely in accordance with decay rate calculations.


(**assuming we use a different cat each time. If we don't, well eventually we'll able to accurately predict the outcome: still dead, still dead, still dead... :biggrin: )
 
Last edited:
We can't do the Schrödinger Cat experiment, mainly because the measurement of "dead" and "alive" are not defined. However, we can do a Schrödinger Cat-type experiments, and we have! Refer to the Stony Brook/Delft SQUID experiments. The results show that the superposition of two orthorgonal states produces the coherence energy gap as predicted by QM.

Zz.
 
The cat is too big and interacting with too much in the universe for it to keep up its magic trick for more than the tiniest instant. :biggrin:
 

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