Mainz 2017 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 25: Quantum Effects: Cavity QED II
Q 25.1: Vortrag
Dienstag, 7. März 2017, 14:30–14:45, P 4
Distinguishing models of surface response through the self-energy of an electron — •Robert Bennett1, Stefan Yoshi Buhmann1, and Claudia Eberlein2 — 1Albert-Ludwigs-Universität Freiburg, D-79104 Freiburg i. Br., Germany — 2University of Sussex, Falmer, Brighton BN1 9QH, UK
We consider the self-energy of an electron confined between parallel plates, representing a simple model of a cavity. The formalism of macroscopic quantum electrodynamics is used to describe the boundary-dependent fluctuating quantised vacuum field to which the electron is coupled, thereby endowing it with a surface-dependent self-energy [1,2]. After introducing the formalism we will outline the derivation of a general formula for this energy shift and demonstrate that its sign is different for two commonly-used models of surface response, namely the plasma model and the Drude model. Following this we propose a cyclotron-based experiment which could in principle detect this difference in sign, shedding light on continuing disagreements about the correct prescription for the interaction of low-frequency vacuum photons with media.
[1] R. Bennett, S.Y. Buhmann and C. Eberlein: arXiv:1610.01416 [quant-ph]
[2] R. Bennett, C. Eberlein - Physical Review A 86 (6) 062505, 2012