2015/09/30 by Naritaka Oshita, Kazuhiro Yamamoto, Sen Zhang
Physics and Astronomy · #Charged particle #Experimental and Theoretical Physics Studies #Ion #Physics #Quantum #Quantum Electrodynamics and Casimir Effect #Quantum Mechanics and Applications #Quantum electrodynamics #Quantum fluctuation #Quantum mechanics #Radiation #Transition radiation #Unruh effect #hep-th
paper · pdf · doi:10.1103/physrevd.93.085016
published as Phys. Rev. D 93, 085016 (2016) · 6 pages, 4 figures, Physical Review D, in press
arxiv created 2016/04/08 · openalex publication_date 2016/04/12 · arxiv updated 2016/04/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We investigate the properties of quantum radiation produced by a uniformly accelerating charged particle undergoing thermal random motion, which originates from the coupling to the vacuum fluctuations of the electromagnetic field. Because the thermal random motion is regarded to result from the Unruh effect, the quantum radiation might give us hints of the Unruh effect. The energy flux of the quantum radiation is negative and smaller than that of Larmor radiation by one order in a/m, where a is the constant acceleration and m is the mass of the particle. Thus, the quantum radiation appears to be a suppression of the classical Larmor radiation. The quantum interference effect plays an important role in this unique signature. The results are consistent with the predictions of a model consisting of a particle coupled to a massless scalar field as well as those of the previous studies on the quantum effect on the Larmor radiation.