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Unruh effect = Hawking effect?

  1. Mar 8, 2012 #1
    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!
  2. jcsd
  3. Mar 8, 2012 #2


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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?
  4. Mar 8, 2012 #3
    Thanks Demystifier,
    but in which precise aspects are they different and in which similar? Is there a clear analysis somewhere available?
  5. Mar 8, 2012 #4


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  6. Mar 10, 2012 #5
    A lot of the 'differences' seem related to different frames of reference.....

    We had a rather good discussion here:


    with some interesting links.

    And Wikipedia offers this:

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

    Some connections between Unruh and Hawking effects are mentioned here:
    Last edited by a moderator: May 5, 2017
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