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Unruh effect and detectors moving in a circle

  1. Nov 28, 2012 #1
    Hi all,

    I have a question about the Unruh effect. I've read that a detector will only register the effect (i.e., the thermal bath) when the Rindler horizon is visible - in turn, a detector accelerating in a circle (changing direction but not speed) would not measure the thermal effect because no horizon is visible. Can anyone shed light on whether this is, in fact, correct?
  2. jcsd
  3. Nov 29, 2012 #2
    Very intersting question, One has to do mode transformation and see if positive frequency modes transform into negetive frequency modes.
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