Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 56: Quantum effects: QED II
Q 56.4: Talk
Friday, March 21, 2014, 11:15–11:30, DO26 208
QED with vortex electrons: quantum states and Compton scattering — •Dmitry Karlovets1,2 and Antonino Di Piazza1 — 1Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, D-69117 Heidelberg, Germany — 2Tomsk Polytechnic University, Lenina 30, 634050 Tomsk, Russia
We investigate theoretically quantum processes with electrons carrying orbital angular momentum ℓ with respect to the propagation axis. These so-called vortex electrons, which were created experimentally just a few years ago, possess helical wave-fronts and a magnetic moment which is proportional to ℓ. So far, the values of ℓ ∼ 100 ℏ have been realized in experiments that corresponds to the magnetic moment roughly 100 times higher than the Bohr magneton. It has recently been predicted that such a high magnetic moment can notably influence characteristics of radiation by vortex electrons [1]. We study basic QED phenomena with such electrons like Compton scattering as well as their quantum states in external field of a plane wave of arbitrary strength [2] and discuss some possibilities for experimental observation of the corresponding effects.
[1] I.P. Ivanov, D.V. Karlovets, Phys. Rev. Lett. 110, 264801 (2013).
[2] D.V. Karlovets, Phys. Rev. A 86, 062102 (2012).