The European Physical Journal C | |
Quantum Larmor radiation in de Sitter spacetime | |
Robert Blaga1  Sergiu Busuioc1  | |
[1] West University of Timişoara, V. Pârvan Ave. 4, 300223, Timisoara, Romania; | |
关键词: Flat Space; Flat Spacetime; Conformal Time; Maxwell Field; Unit Solid Angle; | |
DOI : 10.1140/epjc/s10052-016-4341-0 | |
来源: Springer | |
【 摘 要 】
We study the radiation emitted by inertial charge evolving on the expanding de Sitter spacetime. Performing a perturbative calculation, within scalar quantum electrodynamics (sQED), we obtain the transition amplitude for the process and using this we define the energy radiated by the source. In the non-relativistic limit we find that the leading term is compatible with the classical result (Larmor formula). The first quantum correction is found to be negative, a result which is in line with a number of similar quantum field theory results. For the ultra-relativistic case we find a logarithmic divergence of the emitted energy for large frequencies, which we link to the nature of the spacetime. We compare our results with that of Nomura et al. (JCAP 11:013, 2006), where the authors make a similar calculation for a general conformally flat spacetime.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
---|---|---|---|
RO202112171223811ZK.pdf | 582KB | download |