4 papers
How to suppress exponential growth -- on the parametric resonance of photons in an axion background
Ariel Arza, Thomas Schwetz, Elisa Todarello
Axion--photon interactions can lead to an enhancement of the electromagnetic field by parametric resonance in the presence of a cold axion background, for modes with a frequency cl…
Duration of Classicality of an inhomogeneous quantum field with repulsive contact self-interactions
Ariel Arza, Sankha S. Chakrabarty, Seishi Enomoto +2
Quantum fields with large degeneracy are often approximated as classical fields. Here, we show how quantum and classical evolution of a highly degenerate quantum field with repulsi…
Production and detection of an axion dark matter echo
Ariel Arza, Pierre Sikivie
Electromagnetic radiation with angular frequency equal to half the axion mass stimulates the decay of cold dark matter axions and produces an echo, i.e. faint electromagnetic radia…
Photon enhancement in a homogeneous axion dark matter background
Ariel Arza
We study the propagation of photons in a homogeneous axion dark matter background. When the axion decay into two photons is stimulated, the photon field exhibits a parametric insta…