https://doi.org/10.1140/epjp/s13360-020-00290-2
Regular Article
QED background against atomic neutrino process with initial spatial phase
1
Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka, 560-0043, Japan
2
Department of Physics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
3
Research Institute for Interdisciplinary Science, Okayama University, Tsushima-naka 3-1-1, Kita-ku, Okayama, 700-8530, Japan
* e-mail: tanaka@phys.sci.osaka-u.ac.jp
Received:
11
December
2019
Accepted:
21
February
2020
Published online:
3
March
2020
Atomic deexcitation emitting a neutrino pair and a photon is expected to provide a novel method of neutrino physics if it is enhanced by quantum coherence in a macroscopic target. However, the same enhancement mechanism may also lead to a serious problem of enhanced QED background process. We show that the QED background can be suppressed enough in the photonic crystal waveguide by using the spatial phase that is imprinted in the process of initial coherence generation in the target at excitation.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2020
