Would Schrödinger's bomb be as uncertain as his cat?

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Discussion Overview

The discussion revolves around the conceptual analogy between Schrödinger's cat and a hypothetical Schrödinger's bomb, specifically addressing the nature of uncertainty in quantum mechanics. Participants explore whether the bomb can be considered to exist in a superposition of exploded and unexploded states, similar to the cat's state of being both dead and alive. The conversation touches on theoretical implications, interpretations of quantum mechanics, and the conditions necessary for such a scenario.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants question whether one could accurately claim that a bomb is both exploded and unexploded, suggesting that this is not a valid interpretation.
  • Others propose that due to decoherence, macroscopic objects like bombs cannot exist in a superposition of states, as their constituent parts would have definite positions.
  • A participant introduces the Elitzur-Vaidman bomb tester as a related concept, discussing its implications for distinguishing between live and dud bombs using quantum principles.
  • Some participants express that the uncertainty of Schrödinger's bomb is comparable to that of Schrödinger's cat, though this comparison is debated.
  • There are discussions about the conditions required for a bomb to qualify as Schrödinger's bomb, emphasizing the need for it to be in a soundproof box to maintain uncertainty.
  • Several posts focus on the technical aspects of image uploading and forum navigation, which diverges from the main topic of discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on whether Schrödinger's bomb can be considered as uncertain as Schrödinger's cat. There are competing views regarding the applicability of quantum superposition to macroscopic objects like bombs, and the discussion remains unresolved.

Contextual Notes

Some limitations include the dependence on interpretations of quantum mechanics, the role of decoherence, and the specific conditions under which the bomb's state is considered. These factors contribute to the complexity of the discussion without leading to definitive conclusions.

pBrane
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if you were standing next to Schrödinger's bomb, triggered by a random event. Would you say "The bomb is both exploded and unexploded?".
 
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pBrane said:
if you were standing next to Schrödinger's bomb, triggered by a random event. Would you say "The bomb is both exploded and unexploded?".
No, and neither would you say (accurately anyway) that the cat is both dead and alive.

There are hundreds, perhaps thousands, of threads on this forum about it all. I suggest a forum search and a good place to start is the set of links at the bottom of this page
 
phinds said:
No, and neither would you say (accurately anyway) that the cat is both dead and alive.

There are hundreds, perhaps thousands, of threads on this forum about it all. I suggest a forum search and a good place to start is the set of links at the bottom of this page
Thx phinds
 
pBrane said:
if you were standing next to Schrödinger's bomb, triggered by a random event. Would you say "The bomb is both exploded and unexploded?".

Of course not.

There are a number off slightly different ways of resolving Schrödinger's Cat but here is my way.

Due to decoherence objects here in the macro world have definite position. The constituent parts of an exploded and un-exploded bomb have different positions. This means you can't have a superposition of an exploded and un-exploded bomb.

Thanks
Bill
 
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Related: the Elitzur-Vaidman bomb tester.

If you have a bomb that's triggered by a single qubit being on at a particular time (e.g. a single photon passing by), you can experimentally separate dud bombs from live bombs without setting off all of the live bombs by performing superposed queries.

If I recall correctly, you can make this effect arbitrarily strong (i.e. lose arbitrarily few bombs due to the classification process blowing them up by passing a photon through) via Grover's search algorithm.
 
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So I guess the answer to the title question would be, "Yes, Schroedinger's bomb is as uncertain as his cat - but that isn't saying much".
 
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Strilanc said:
Beat you to mentioning it by 3 hours :oldwink:.
Sorry, I haven't noticed your post before.
 
  • #10
I want to upload a small diagram from my hard drive, must I upload it somewhere else first? (anti-malware?)
[/PLAIN]
 
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  • #11
pBrane said:
I want to upload a small diagram from my hard drive, must I upload it somewhere else first? (anti-malware?)

The image uploading UX is kind of awful on this site. You probably clicked on the 'insert an image' button in the toolbar, but that only takes URLs.

You upload diagrams by hitting the 'upload' button near the 'Post Reply' button to the bottom right of the reply box. Then the file you picked will appear in a list below the reply box, and you can click either 'THUMBNAIL' or 'FULL IMAGE' within that list to insert it inline in the post.
 
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  • #12
Strilanc said:
The image uploading UX is kind of awful on this site. You probably clicked on the 'insert an image' button in the toolbar, but that only takes URLs.

You upload diagrams by hitting the 'upload' button near the 'Post Reply' button to the bottom right of the reply box. Then the file you picked will appear in a list below the reply box, and you can click either 'THUMBNAIL' or 'FULL IMAGE' within that list to insert it inline in the post.
Try uploading it to photobucket or similar website, then use the URL pointing to the image for the input when you click 'Image'
 
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  • #13
Or, you can take a screen grab of a picture, from "My Pictures", with the Snipping Tool and copy it... then paste it here.

upload_2016-7-26_20-51-33.png

That's what I just did.... :oldsmile:I also centered it buy placing it between these tags... [ center][/center].

But, don't leave a space between the bracket and the c... I had to, so it would show here...
 
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  • #14
pBrane said:
if you were standing next to Schrödinger's bomb, triggered by a random event. Would you say "The bomb is both exploded and unexploded?".

To qualify as Schrödinger's Bomb, the bomb would need to be in an armored, soundproof box so that you don't know whether the bomb went off until you open the box.
 
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  • #15
David Lewis said:
To qualify as Schrödinger's Bomb, the bomb would need to be in an armored, soundproof box so that you don't know whether the bomb went off until you open the box.
Which would be irrelevant regarding whether or not the bomb was ever in a state of both exploded and unexploded, which it is not and which was the OP's question.
 
  • #16
David Lewis said:
To qualify as Schrödinger's Bomb, the bomb would need to be in an armored, soundproof box so that you don't know whether the bomb went off until you open the box.
David Lewis said:
To qualify as Schrödinger's Bomb, the bomb would need to be in an armored, soundproof box so that you don't know whether the bomb went off until you open the box.

phinds said:
Which would be irrelevant regarding whether or not the bomb was ever in a state of both exploded and unexploded, which it is not and which was the OP's question.
Too true phinds. But optimism overrules logic when it makes you smile.

I like your your avatar's coat mate and I hope that is a smile on your face!
 

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