Conversion of gravitons into dark photons in cosmological dark magnetic fields

Abstract

It is well known that gravitons can convert into photons, and vice versa, in the presence of cosmological magnetic fields. We study this conversion process in the context of the atomic dark matter scenario. In this scenario, we can expect cosmological dark magnetic fields, which are free from the stringent constraint from the cosmic microwave observations. We find that gravitons can effectively convert into dark photons in the presence of cosmological dark magnetic fields.The graviton-dark photon conversion effect may open up a new window for ultrahigh frequency gravitational waves.

Pulsar timing residual induced by ultralight vector dark matter

“…by using ground-based gravitational-wave interferometers [13,14] or taking into account the cosmological plasma effects with a photon [15]. Some phenomenologies on the vector DM are discussed together with its production mechanism [11,[16][17][18][19][20][21][22][23]. The effects of gravitational interaction between the vector DM field and binary pulsar systems on the dynamics of the system have been considered in [24].…”

Universal 1020 Hz stochastic gravitational waves from photon spheres of black holes

“…In this section, we shall briefly review the conversion phenomenon between photon and graviton proposed by Gertsenshtein [6], with which we shall explore the possibility of gravitational wave emission from black hole magnetospheres. For more detailed derivation, see [29].…”

Universal $10^{20}$Hz stochastic gravitational waves from photon spheres of black holes

“…In this section we shall briefly review the conversion phenomenon between photon and graviton proposed by Gertsenshtein [6] with which we shall explore the possibility of gravitational wave emission from black hole magnetospheres. For more detailed derivation, see [24].…”