Stimulated Radiation from Axion Cluster Evolution in Static Spacetimes

Abstract

If their number density is high enough, clusters of axions can decay to photons via stimulated emission. We study both the special and general relativistic corrections to lasing in such dense axion clusters as they evolve in static spacetimes. Our main results are rate equations for the evolution of axion and photon number densities that include these corrections. We use Schwarzschild spacetime as a detailed example.

31 pages, 3 figures

References in corpus (6)

• The Caustic Ring Model of the Milky Way Halo
• Radio-emission of axion stars
• Axion minicluster power spectrum and mass function
• Fast radio bursts from axion stars moving through pulsar magnetospheres
• Photon directional profile from stimulated decay of axion clouds with arbitrary momentum distributions
• Photon directional profile from stimulated decay of axion clouds with arbitrary axion spatial distributions