Maths HEP Lunchtime Seminars: Accelerated detectors and worldsheet horizons in AdS/CFT
27 May 2011 13:00 in CM221
We use the AdS/CFT correspondence to discuss the response of an accelerated observer to the quantum vacuum fluctuations. In particular, we study heavy quarks probing a strongly coupled CFT by analysing strings moving in AdS. We propose that, in this context, a non-trivial detection rate is associated to
the existence of a worldsheet horizon and we find an Unruh-like expression for the worldsheet temperature.
Finally, by examining a rotating string in global AdS we find that there is a transition between string embeddings with and without worldsheet horizon.
The dual picture corresponds to having non-trivial or trivial interaction with the quantum vacuum respectively.