Experimental proof of Unruh Effect

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Discussion Overview

The discussion centers around the experimental proof of the Unruh effect, exploring its implications, potential experimental setups, and the theoretical underpinnings that necessitate its existence. Participants are examining whether the Unruh effect is real and how it relates to concepts such as the quantum vacuum and particle physics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about effective experimental setups to test the Unruh effect and questions its reality, suggesting that if true, it implies a significant reinterpretation of vacuum and particle existence.
  • Another participant mentions the availability of numerous articles discussing methods to detect the Unruh effect, seeking specific references from others.
  • There is a request for clarification on the theoretical necessity of the Unruh effect, comparing it to the Higgs field's role in symmetry considerations in wave equations.
  • Participants reference a claim from Scholarpedia that the Unruh effect is necessary for consistency in describing phenomena in different reference frames, prompting further inquiry into which articles address this necessity.
  • One participant notes that the existence of Unruh radiation is debated, with some asserting it has been observed while others deny its emission, raising questions about the relationship between the acceptance of the Unruh effect and its radiation.
  • A later reply clarifies that the Unruh effect and radiation do not necessarily occur together, emphasizing that while the effect itself is not controversial, the interpretation of measurements by inertial and non-inertial observers is disputed.
  • Another participant agrees that some aspects of the Unruh phenomena are controversial, providing a reference to a related paper for further exploration.

Areas of Agreement / Disagreement

Participants express differing views on the acceptance of the Unruh effect and its radiation, with some asserting that the effect itself is not in dispute while others highlight ongoing controversies regarding its implications and interpretations.

Contextual Notes

There are limitations in the discussion regarding the definitions of terms used, the assumptions underlying the claims, and the unresolved nature of the experimental evidence for the Unruh effect.

Edward Wij
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What would be a great experimental setup to test for Unruh effect? is it real or not?

It has huge consequence because if it were true, vacuum or even particles are just mirage.. because in an empty box.. steady observers would see nothing while accelerating observer would see it full of hot gasses of particles.
 
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There are quite a lot of articles online about possible methods to detect the Unruh effect - which have you seen so far?
 
Simon Bridge said:
There are quite a lot of articles online about possible methods to detect the Unruh effect - which have you seen so far?

Wha info I wish to acquire now is what theorem makes Unruh Effect necessarily required.. is it a necessity akin to how the higgs field are necessary to solve certain symmetry considerations in the wave equations?

Unruh effect can give big boost to the theory the quantum vacuum or even particles are just mirage.
 
Wha[t] info I wish to acquire now is what theorem makes Unruh Effect necessarily required.
There are a lot of articles online which address this question - some quite directly.

An example:
"the effect is necessary for consistency of the respective descriptions of observed phenomena, such as particle decay, in inertial and in accelerated reference frames"
-- Scholarpedia
... there are many that go into more detail than that.

To best help you, we need to know which you have read and how they fail to answer your question.
 
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Simon Bridge said:
There are a lot of articles online which address this question - some quite directly.

An example:
"the effect is necessary for consistency of the respective descriptions of observed phenomena, such as particle decay, in inertial and in accelerated reference frames"
-- Scholarpedia
... there are many that go into more detail than that.

To best help you, we need to know which you have read and how they fail to answer your question.

I saw how wiki stated that "The existence of Unruh radiation is not universally accepted. Some claim that it has already been observed,[12] while others claims that it is not emitted at all.[13] While the skeptics accept that an accelerating object thermalises at the Unruh temperature, they do not believe that this leads to the emission of photons, arguing that the emission and absorption rates of the accelerating particle are balanced."

I presumed that if Unruh radiation were not universally accepted.. It means Unruh effect not universality accepted too. But are these two related such that one's nonexistence would automatically be another's nonexistence as well?
 
The radiation and the effect (as used by wikipedia) do not have to occur together. The passage you left out was:
"Although Unruh's prediction that an accelerating detector would see a thermal bath is not controversial, the interpretation of the transitions in the detector in the non-accelerating frame are." (my emph)​
i.e. The effect is what the non-inertial observer measures, while the radiation is believed to be what an inertial observer will measure ... some people, according to the article, dispute that there is a net emission from an accelerating object. Thus the effect itself is not in dispute.
 
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