Unruh effect = Hawking effect?

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Hello everybody,

I am currently studying QFT on curved spacetime and I got puzzled about the question:

Are Unruh and Hawking effect just the same by invoking the equivalence principle?

I found ambiguous statements and this paper contributed to it. http://arxiv.org/pdf/1102.5564v2.pdf

Is anybody here who knows details, can refer any good paper, argumentation?

Thanks in advance!
 
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It is widely agreed that they are different (but in many respects similar) effects, and the paper you mention confirms it.

By the way, I have another question which someone might be able to answer. There are many examples of condensed-matter ANALOGUE Hawking radiation, but is there a similar ANALOGUE Unruh effect?
 
Thanks Demystifier,
but in which precise aspects are they different and in which similar? Is there a clear analysis somewhere available?
 
A lot of the 'differences' seem related to different frames of reference...

We had a rather good discussion here:

https://www.physicsforums.com/showthread.php?t=574548

with some interesting links.

And Wikipedia offers this:

..The Rindler spacetime has a horizon, and locally any non-extremal black hole horizon is Rindler. So the Rindler spacetime gives the local properties of black holes and cosmological horizons. The Unruh effect would then be the near-horizon form of the Hawking radiation.

http://en.wikipedia.org/wiki/Unruh_e...interpretation
[This link no longer seems to work??]

Some connections between Unruh and Hawking effects are mentioned here:
http://en.wikipedia.org/wiki/Hawking_radiation
 
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https://arxiv.org/pdf/2503.09804 From the abstract: ... Our derivation uses both EE and the Newtonian approximation of EE in Part I, to describe semi-classically in Part II the advection of DM, created at the level of the universe, into galaxies and clusters thereof. This advection happens proportional with their own classically generated gravitational field g, due to self-interaction of the gravitational field. It is based on the universal formula ρD =λgg′2 for the densityρ D of DM...

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