How often does the Unruh?DeWitt detector click? Regularization by a spatial profile

@inproceedings{Louko2006HowOD,
  title={How often does the Unruh?DeWitt detector click? Regularization by a spatial profile},
  author={Jorma Louko and Alejandro Satz},
  year={2006}
}
We analyse within first-order perturbation theory the instantaneous transition rate of an accelerated Unruh–DeWitt particle detector whose coupling to a massless scalar field on four-dimensional Minkowski space is regularized by a spatial profile. For the Lorentzian profile introduced by Schlicht, the zero-size limit is computed explicitly and expressed as a manifestly finite integral formula that no longer involves regulators or limits. The same transition rate is obtained for an arbitrary… CONTINUE READING

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