New Insights into Uniformly Accelerated Detector in a Quantum Field

Details New Insights into Uniformly Accelerated Detector in a Quantum Field New Insights into Uniformly Accelerated Detector in a Quantum Field

2006-10-06

arxiv.org/abs/gr-qc/0610024v1

Found.Phys.37:480-490,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, invited talk given by SYL at the conference of International Association for Relativistic Dynamics (IARD), June 2006,

Scientific paper

10.1007/s10701-007-9120-1

We obtained an exact solution for a uniformly accelerated Unruh-DeWitt detector interacting with a massless scalar field in (3+1) dimensions which enables us to study the entire evolution of the total system, from the initial transient to late-time steady state. We find that the Unruh effect as derived from time-dependent perturbation theory is valid only in the transient stage and is totally invalid for cases with proper acceleration smaller than the damping constant. We also found that, unlike in (1+1)D results, the (3+1)D uniformly accelerated Unruh-DeWitt detector in a steady state does emit a positive radiated power of quantum nature at late-times, but it is not connected to the thermal radiance experienced by the detector in the Unruh effect proper.

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