Cosmological and Astrophysical Constraints on Tensor Unparticles

Understand

We calculate cosmological and astrophysical bounds on the couplings between standard model fields and tensor unparticles.

• The present day density of tensor unparticles from neutrino-neutrino and photon-photon annihilation is calculated.
• Also, the supernovae volume energy loss rates from electron-positron and photon-photon annihilation to tensor unparticles are calculated.
• The constraints from matter density and supernovae volume energy loss rates from photon-photon annihilation are on the same order of magnitude, while the bounds from supernovae volume energy loss rates from electron-positron annihilation are an order of magnitude lower.