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Would it be fair to describe the Unruh effect by saying that from the perspective of an accelerated observer, some virtual particles in an inertial frame become real particles in the accelerated frame?
Wald talks about how the appropriate transformations between inertial and accelerated frames (bogoliubov transformation) map positive frequencies to negative frequencies (page 414).
I think it is correct to say that the negative frequency particles would have negative energy and hence be virtual particles, leading to my description above, but I'm not terribly confident about QFT.
Wald talks about how the appropriate transformations between inertial and accelerated frames (bogoliubov transformation) map positive frequencies to negative frequencies (page 414).
I think it is correct to say that the negative frequency particles would have negative energy and hence be virtual particles, leading to my description above, but I'm not terribly confident about QFT.